Finding the Fourth Proportional to 21,061.48, 29,061.96 and 11,630.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.48 : 29,061.96 = 11,630.04 : x
2. Step 2: Convert to fraction form
   21,061.48/29,061.96 = 11,630.04/x
3. Step 3: Cross multiply
   21,061.48x = 29,061.96 × 11,630.04
4. Step 4: Simplify right side
   21,061.48x = 337,991,757.28
5. Step 5: Solve for x
   x = 337,991,757.28/21,061.48
6. Step 6: Final answer
   x = 16,047.86