Finding the Fourth Proportional to 31,008.62, 42,791 and 17,581.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008.62 : 42,791 = 17,581.12 : x
2. Step 2: Convert to fraction form
   31,008.62/42,791 = 17,581.12/x
3. Step 3: Cross multiply
   31,008.62x = 42,791 × 17,581.12
4. Step 4: Simplify right side
   31,008.62x = 752,313,705.92
5. Step 5: Solve for x
   x = 752,313,705.92/31,008.62
6. Step 6: Final answer
   x = 24,261.44