Finding the Fourth Proportional to 31,401.28, 43,332.86 and 17,972.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,401.28 : 43,332.86 = 17,972.07 : x
2. Step 2: Convert to fraction form
   31,401.28/43,332.86 = 17,972.07/x
3. Step 3: Cross multiply
   31,401.28x = 43,332.86 × 17,972.07
4. Step 4: Simplify right side
   31,401.28x = 778,781,211.69
5. Step 5: Solve for x
   x = 778,781,211.69/31,401.28
6. Step 6: Final answer
   x = 24,800.94