Finding the Fourth Proportional to 21,159.89, 29,134.17 and 17,966.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,159.89 : 29,134.17 = 17,966.53 : x
2. Step 2: Convert to fraction form
   21,159.89/29,134.17 = 17,966.53/x
3. Step 3: Cross multiply
   21,159.89x = 29,134.17 × 17,966.53
4. Step 4: Simplify right side
   21,159.89x = 523,439,939.33
5. Step 5: Solve for x
   x = 523,439,939.33/21,159.89
6. Step 6: Final answer
   x = 24,737.37