Finding the Fourth Proportional to 31,008.72, 42,793.16 and 17,763.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008.72 : 42,793.16 = 17,763.28 : x
2. Step 2: Convert to fraction form
   31,008.72/42,793.16 = 17,763.28/x
3. Step 3: Cross multiply
   31,008.72x = 42,793.16 × 17,763.28
4. Step 4: Simplify right side
   31,008.72x = 760,146,883.16
5. Step 5: Solve for x
   x = 760,146,883.16/31,008.72
6. Step 6: Final answer
   x = 24,513.97