$$AllCity$,$ Inc., is financed $41\%$ with$$ debt, $7\%$ with preferred$$ stock, and $52\%$ with common stock. Its pretax cost of debt is $5\mathrm{.}8\%,$ its preferred stock pays an annual dividend of $ $2\mathrm{.}52$ and is priced at $ $27.$ It has an equity beta of $1\mathrm{.}18.$ Assume the$$ risk$-$free rate is $1\mathrm{.}9\%,$ the market risk premium is $7\mathrm{.}2\%$ and$$ AllCity's tax rate is $25\%.$ What is its$$ after$-$tax WACC?

$$Note: Assume that the firm will always be able to utilize its full interest tax shield.