Pfd Company has debt with a yield to maturity of $5\mathrm{.}5\%,$ a cost of equity of $14\mathrm{.}9\%,$ and a cost of preferred stock of $9\mathrm{.}5\%.$ The market values of its$$ debt, preferred$$ stock, and equity are $ $13\mathrm{.}4$million$,$ $ $3\mathrm{.}5$million$,$ and $ $13\mathrm{.}8$million$,$ respectively, and its tax rate is $38\%.$ What is this$$ firm's after$-$tax$$ WACC?