Finding the Fourth Proportional to 16,619.31, 22,915.96 and 13,585

Step by Step Solution

1. Step 1: Write the proportion equation
   16,619.31 : 22,915.96 = 13,585 : x
2. Step 2: Convert to fraction form
   16,619.31/22,915.96 = 13,585/x
3. Step 3: Cross multiply
   16,619.31x = 22,915.96 × 13,585
4. Step 4: Simplify right side
   16,619.31x = 311,313,316.60
5. Step 5: Solve for x
   x = 311,313,316.60/16,619.31
6. Step 6: Final answer
   x = 18,732.02