Finding the Fourth Proportional to 21,451.50, 32,139.72 and 14,881.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,451.50 : 32,139.72 = 14,881.86 : x
2. Step 2: Convert to fraction form
   21,451.50/32,139.72 = 14,881.86/x
3. Step 3: Cross multiply
   21,451.50x = 32,139.72 × 14,881.86
4. Step 4: Simplify right side
   21,451.50x = 478,298,813.48
5. Step 5: Solve for x
   x = 478,298,813.48/21,451.50
6. Step 6: Final answer
   x = 22,296.75