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Part $1$

Pfd Company has debt with a yield to maturity of $7\mathrm{.}7\%,$ a cost of equity of $12\mathrm{.}7\%,$ and a cost of preferred stock of $9\mathrm{.}9\%.$ The market values of its$$ debt, preferred$$ stock, and equity are $ $10\mathrm{.}3$million$,$ $ $3\mathrm{.}1$million$,$ and $ $13\mathrm{.}9$million$,$ respectively, and its tax rate is $35\%.$ What is this$$ firm's after$-$tax$$ WACC?