Finding the Fourth Proportional to 21,359.08, 29,469.08 and 12,404.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,359.08 : 29,469.08 = 12,404.86 : x
2. Step 2: Convert to fraction form
   21,359.08/29,469.08 = 12,404.86/x
3. Step 3: Cross multiply
   21,359.08x = 29,469.08 × 12,404.86
4. Step 4: Simplify right side
   21,359.08x = 365,559,811.73
5. Step 5: Solve for x
   x = 365,559,811.73/21,359.08
6. Step 6: Final answer
   x = 17,114.96