Can someone please Help me how to solve / formula to calculate my homework, I need to know how to get the rate tax rate.

According to one of my sorces they told me the answer (tax rate is 48%) They can't tell me the calculation is?

see below:

3-53. Extensions of the CVP ModelTaxes

(LO 3-4)

Central Company manufactures a sensor used in various electronic devices. The products price and cost characteristics are:

Selling price per unit	$ 13
Variable cost per unit	4
Fixed cost per year	540,000

Required

The company must sell 10,000 units annually in order to earn $187,200 in profits after taxes. What is Central Companys tax rate?