Finding the Fourth Proportional to 17,681.76, 24,401.25 and 9,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,681.76 : 24,401.25 = 9,724.50 : x
2. Step 2: Convert to fraction form
   17,681.76/24,401.25 = 9,724.50/x
3. Step 3: Cross multiply
   17,681.76x = 24,401.25 × 9,724.50
4. Step 4: Simplify right side
   17,681.76x = 237,289,955.63
5. Step 5: Solve for x
   x = 237,289,955.63/17,681.76
6. Step 6: Final answer
   x = 13,420.04