Is it possible to track stolen Bitcoin after exchange
There were several transfers from your wallet to the thiefs wallet(s). This would be the chance to catch the scammer:

All involved bitcoin addresses needs to be analysed to see if there are more addresses belonging with a high liklihood to the same scammer.
All outgoing transactions from each of the addresses of 1) needs to be traced if they end up in one of the millions of known exchange addresses
If there are evidences then the police should ask the exchange directly (or via help of their peers in the exchanges country) for any information about the scammer which is likely their client. This can be the id, bank account, a bitcoin withdrawal address or an altcoin withdrawal address. In the first two cases you can claim back the lost funds. In the last two cases this is the starting point for a new analysis/tracing

If someone moves bitcoin to an exchange then the follow on activities aren't visible in the blockchain anymore, then the exchanges support is needed.
To be more specific I'd need to see the bitcoin address(es) where the coins went to after leaving your wallet.