Finding the Fourth Proportional to 17,578.80, 24,258.42 and 9,620.87

Step by Step Solution

1. Step 1: Write the proportion equation
   17,578.80 : 24,258.42 = 9,620.87 : x
2. Step 2: Convert to fraction form
   17,578.80/24,258.42 = 9,620.87/x
3. Step 3: Cross multiply
   17,578.80x = 24,258.42 × 9,620.87
4. Step 4: Simplify right side
   17,578.80x = 233,386,983.93
5. Step 5: Solve for x
   x = 233,386,983.93/17,578.80
6. Step 6: Final answer
   x = 13,276.62