Finding the Fourth Proportional to 31,007.04, 42,791.28 and 17,580.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,007.04 : 42,791.28 = 17,580.88 : x
2. Step 2: Convert to fraction form
   31,007.04/42,791.28 = 17,580.88/x
3. Step 3: Cross multiply
   31,007.04x = 42,791.28 × 17,580.88
4. Step 4: Simplify right side
   31,007.04x = 752,308,358.73
5. Step 5: Solve for x
   x = 752,308,358.73/31,007.04
6. Step 6: Final answer
   x = 24,262.50