Finding the Fourth Proportional to 17,680.57, 24,398.15 and 9,722.79

Step by Step Solution

1. Step 1: Write the proportion equation
   17,680.57 : 24,398.15 = 9,722.79 : x
2. Step 2: Convert to fraction form
   17,680.57/24,398.15 = 9,722.79/x
3. Step 3: Cross multiply
   17,680.57x = 24,398.15 × 9,722.79
4. Step 4: Simplify right side
   17,680.57x = 237,218,040.22
5. Step 5: Solve for x
   x = 237,218,040.22/17,680.57
6. Step 6: Final answer
   x = 13,416.88