Finding the Fourth Proportional to 17,680.53, 24,399.78 and 9,723.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,680.53 : 24,399.78 = 9,723.50 : x
2. Step 2: Convert to fraction form
   17,680.53/24,399.78 = 9,723.50/x
3. Step 3: Cross multiply
   17,680.53x = 24,399.78 × 9,723.50
4. Step 4: Simplify right side
   17,680.53x = 237,251,266.79
5. Step 5: Solve for x
   x = 237,251,266.79/17,680.53
6. Step 6: Final answer
   x = 13,418.78