Finding the Fourth Proportional to 21,757.74, 32,629.71 and 13,425.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,757.74 : 32,629.71 = 13,425.27 : x
2. Step 2: Convert to fraction form
   21,757.74/32,629.71 = 13,425.27/x
3. Step 3: Cross multiply
   21,757.74x = 32,629.71 × 13,425.27
4. Step 4: Simplify right side
   21,757.74x = 438,062,666.77
5. Step 5: Solve for x
   x = 438,062,666.77/21,757.74
6. Step 6: Final answer
   x = 20,133.65