Finding the Fourth Proportional to 12,981.08, 17,915.55 and 8,508.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,981.08 : 17,915.55 = 8,508.62 : x
2. Step 2: Convert to fraction form
   12,981.08/17,915.55 = 8,508.62/x
3. Step 3: Cross multiply
   12,981.08x = 17,915.55 × 8,508.62
4. Step 4: Simplify right side
   12,981.08x = 152,436,607.04
5. Step 5: Solve for x
   x = 152,436,607.04/12,981.08
6. Step 6: Final answer
   x = 11,742.98