Finding the Fourth Proportional to 21,061.98, 29,065.55 and 11,502

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.98 : 29,065.55 = 11,502 : x
2. Step 2: Convert to fraction form
   21,061.98/29,065.55 = 11,502/x
3. Step 3: Cross multiply
   21,061.98x = 29,065.55 × 11,502
4. Step 4: Simplify right side
   21,061.98x = 334,311,898.59
5. Step 5: Solve for x
   x = 334,311,898.59/21,061.98
6. Step 6: Final answer
   x = 15,872.77