What is the Simple Exponential Smoothing $($SES$)$ forecast with an alpha of $\mathrm{.}6$ for period $4$ is: $($round to $2$ decimal places$)$ Week or X$($Period$)$

Time series value or Y$($Sales$)$

Forecast

$13$

$213$

$311$

$410$

$515$

$612$

$7$