Finding the Fourth Proportional to 16,688.76, 22,981.50 and 14,919.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,688.76 : 22,981.50 = 14,919.72 : x
2. Step 2: Convert to fraction form
   16,688.76/22,981.50 = 14,919.72/x
3. Step 3: Cross multiply
   16,688.76x = 22,981.50 × 14,919.72
4. Step 4: Simplify right side
   16,688.76x = 342,877,545.18
5. Step 5: Solve for x
   x = 342,877,545.18/16,688.76
6. Step 6: Final answer
   x = 20,545.42