Finding the Fourth Proportional to 21,493.29, 29,660.76 and 12,061.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,493.29 : 29,660.76 = 12,061.86 : x
2. Step 2: Convert to fraction form
   21,493.29/29,660.76 = 12,061.86/x
3. Step 3: Cross multiply
   21,493.29x = 29,660.76 × 12,061.86
4. Step 4: Simplify right side
   21,493.29x = 357,763,934.61
5. Step 5: Solve for x
   x = 357,763,934.61/21,493.29
6. Step 6: Final answer
   x = 16,645.38