Using the data set below, what would be the forecast for period 5 using a four period weighted moving average? The weights for each period are 0.05, 0.15, 0.30, and 0.50 from the oldest period to the most recent period, respectively. (Choose the closest answer.)

Show work if possible.

The choices are

1. 12660
2. 13190
3. 14030
4. 15220

Period	Actual Demand
1	10000
2	12400
3	13250
4	14750
5	15220
6	18500