Finding the Fourth Proportional to 21,700.71, 29,938.41 and 14,153.54

Step by Step Solution

1. Step 1: Write the proportion equation
   21,700.71 : 29,938.41 = 14,153.54 : x
2. Step 2: Convert to fraction form
   21,700.71/29,938.41 = 14,153.54/x
3. Step 3: Cross multiply
   21,700.71x = 29,938.41 × 14,153.54
4. Step 4: Simplify right side
   21,700.71x = 423,734,333.78
5. Step 5: Solve for x
   x = 423,734,333.78/21,700.71
6. Step 6: Final answer
   x = 19,526.29