The set $\{5, 8, 10, 18, 19, 28, 30, x\}$ has eight members. The mean of the set's members is 4.5 less than $x$. What is the value of $x$ ?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
The set $\{5, 8, 10, 18, 19, 28, 30, x\}$ has eight members. The mean of the set's members is 4.5 less than $x$. What is the value of $x$ ?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
22
The set $\{5, 8, 10, 18, 19, 28, 30, x\}$ has eight members. The mean of the set's members is 4.5 less than $x$. What is the value of $x$ ?
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