What the problem is saying is that 93% of the town's population is 5,208. If no one owns more than one car, then each car in the town accounts for one person. So, therefore, 93% of the town = 5,208.
The total population of the town can be found by setting up a proportion.

Cross-multiply:

Solve for x, the town's population:
There are 5,600 people in the town.