Finding the Fourth Proportional to 21,522.21, 29,704.17 and 17,931.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.21 : 29,704.17 = 17,931.48 : x
2. Step 2: Convert to fraction form
   21,522.21/29,704.17 = 17,931.48/x
3. Step 3: Cross multiply
   21,522.21x = 29,704.17 × 17,931.48
4. Step 4: Simplify right side
   21,522.21x = 532,639,730.27
5. Step 5: Solve for x
   x = 532,639,730.27/21,522.21
6. Step 6: Final answer
   x = 24,748.38