Your company has a target capital structure of $52$ percent common stock, $16$ percent preferred stock, and the remaining percent debt. Its cost of equity is $19\mathrm{.}3$ percent, the cost of preferred stock is $8\mathrm{.}9$ percent, and the pretax cost of debt is $6\mathrm{.}7$ percent. The relevant tax rate is $18$ percent. What is the companies WACC?