Finding the Fourth Proportional to 17,680.48, 24,399.70 and 9,723.30

Step by Step Solution

1. Step 1: Write the proportion equation
   17,680.48 : 24,399.70 = 9,723.30 : x
2. Step 2: Convert to fraction form
   17,680.48/24,399.70 = 9,723.30/x
3. Step 3: Cross multiply
   17,680.48x = 24,399.70 × 9,723.30
4. Step 4: Simplify right side
   17,680.48x = 237,245,603.01
5. Step 5: Solve for x
   x = 237,245,603.01/17,680.48
6. Step 6: Final answer
   x = 13,418.50