Question $27(5$ points$)$

The following table reports the sale of umbrellas for $16$ quarters.

$\backslash$table$[[$Year $1,$Year $2,$Year $3,$Year $4,$Quarter$],[9,8,6,4,1],[8,6,4,3,2],[4,4,1,1,3],[7,5,3,2,4]]$

Develop a model using Quarter $3$ as the reference and compute the Fourth Quarterly sales forecast for Year $5.$ Round your answers to three decimal places.