Finding the Fourth Proportional to 31,022.30, 42,807.20 and 17,590.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,022.30 : 42,807.20 = 17,590.88 : x
2. Step 2: Convert to fraction form
   31,022.30/42,807.20 = 17,590.88/x
3. Step 3: Cross multiply
   31,022.30x = 42,807.20 × 17,590.88
4. Step 4: Simplify right side
   31,022.30x = 753,016,318.34
5. Step 5: Solve for x
   x = 753,016,318.34/31,022.30
6. Step 6: Final answer
   x = 24,273.39