Finding the Fourth Proportional to 21,061.52, 31,526.21 and 11,560.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.52 : 31,526.21 = 11,560.83 : x
2. Step 2: Convert to fraction form
   21,061.52/31,526.21 = 11,560.83/x
3. Step 3: Cross multiply
   21,061.52x = 31,526.21 × 11,560.83
4. Step 4: Simplify right side
   21,061.52x = 364,469,065.03
5. Step 5: Solve for x
   x = 364,469,065.03/21,061.52
6. Step 6: Final answer
   x = 17,304.98