Problem with vinyl floor
Kerosene is a solvent and, like vinyl, also a hydrocarbon. Their molecular structure causes them to bind together, and if left untreated the kerosene will soften and possibly dissolve the vinyl. 

You can use a solution of water and mild soap such as dish detergent to break the bond and soak up the kerosene. Do not flood the floor with the solution. Use small amounts on a sponge or mop - wipe, rinse in a separate container and repeat. Be careful not to scrub the floor as it may scratch easily in its softened state. Evaporate any remaining kerosene by blowing a fan across the spot where it spilled.