Finding the Fourth Proportional to 21,436.21, 32,142.71 and 17,022.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,436.21 : 32,142.71 = 17,022.27 : x
2. Step 2: Convert to fraction form
   21,436.21/32,142.71 = 17,022.27/x
3. Step 3: Cross multiply
   21,436.21x = 32,142.71 × 17,022.27
4. Step 4: Simplify right side
   21,436.21x = 547,141,807.79
5. Step 5: Solve for x
   x = 547,141,807.79/21,436.21
6. Step 6: Final answer
   x = 25,524.19