What is the weighted$-$average cost of capital for SKYE Corporation given the following information?

Equity shares outstanding $1$ million

Stock price per share $ $21$

Yield to maturity on debt $7\mathrm{.}68\%$

Book value of interest$-$bearing debt $$12$ million

Coupon interest rate on debt $9\%$

Interest rate on government bonds $4\%$

SKYE$$s equity beta $0\mathrm{.}75$

Historical excess return on stocks $5\mathrm{.}6\%$

Tax rate $30\%$

Note: Enter your answer to $1$ decimal place.