Finding the Fourth Proportional to 17,681.51, 24,400.91 and 9,724.25

Step by Step Solution

1. Step 1: Write the proportion equation
   17,681.51 : 24,400.91 = 9,724.25 : x
2. Step 2: Convert to fraction form
   17,681.51/24,400.91 = 9,724.25/x
3. Step 3: Cross multiply
   17,681.51x = 24,400.91 × 9,724.25
4. Step 4: Simplify right side
   17,681.51x = 237,280,500.45
5. Step 5: Solve for x
   x = 237,280,500.45/17,681.51
6. Step 6: Final answer
   x = 13,419.70