Finding the Fourth Proportional to 17,720.72, 24,454.48 and 9,762.76

Step by Step Solution

1. Step 1: Write the proportion equation
   17,720.72 : 24,454.48 = 9,762.76 : x
2. Step 2: Convert to fraction form
   17,720.72/24,454.48 = 9,762.76/x
3. Step 3: Cross multiply
   17,720.72x = 24,454.48 × 9,762.76
4. Step 4: Simplify right side
   17,720.72x = 238,743,219.16
5. Step 5: Solve for x
   x = 238,743,219.16/17,720.72
6. Step 6: Final answer
   x = 13,472.55