How to set the expense report approval to go to the appropriate Job Level?

This should be fairly simply but is not behaving as expected. Our approval workflow is such that:

Manager with Job level 5 can approve up to $5000.

Senior Manager with Job level 10 can approve from $5000-$10,000.

Director with Job level 15 can approve from $10,000-$15,000.

(This follows the supervisor hierarchy chain).

When an employee submits an expense report of $13,000 , the report is routing to Manager, then once approved going to Sr. Manager, then once that is approved it is going to the Director.

How do I set it up so that based on the dollar amount, it goes right to the Director with Job level 15? i.e., because it is $13,000 and Job Level 15 can approve $10,000-$15,000, it is not necessary for approval to first be sought by the Manager and Sr. Manager before reaching the Director.