Finding the Fourth Proportional to 31,007.62, 42,789.62 and 17,580.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,007.62 : 42,789.62 = 17,580.12 : x
2. Step 2: Convert to fraction form
   31,007.62/42,789.62 = 17,580.12/x
3. Step 3: Cross multiply
   31,007.62x = 42,789.62 × 17,580.12
4. Step 4: Simplify right side
   31,007.62x = 752,246,654.35
5. Step 5: Solve for x
   x = 752,246,654.35/31,007.62
6. Step 6: Final answer
   x = 24,260.06