Finding the Fourth Proportional to 17,720.72, 24,431.78 and 14,522.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,720.72 : 24,431.78 = 14,522.30 : x
2. Step 2: Convert to fraction form
   17,720.72/24,431.78 = 14,522.30/x
3. Step 3: Cross multiply
   17,720.72x = 24,431.78 × 14,522.30
4. Step 4: Simplify right side
   17,720.72x = 354,805,443.92
5. Step 5: Solve for x
   x = 354,805,443.92/17,720.72
6. Step 6: Final answer
   x = 20,022.07