Pfd Company has debt with a yield to maturity of 8.02%, a cost of equity of 14.94%, and a cost of preferred stock of 10.14%. The market values of its debt, preferred stock, and equity are $14.6 million, $3.1 million, and $15.7 million, respectively, and its tax rate is 30%. What is this firm's after-tax WACC? Note: Assume that the firm will always be able to utilize its full interest tax shield. Pfd's after-tax WACC is %. (Round to two decimal places.)