Finding the Fourth Proportional to 31,863.12, 47,800.72 and 10,517.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,863.12 : 47,800.72 = 10,517.12 : x
2. Step 2: Convert to fraction form
   31,863.12/47,800.72 = 10,517.12/x
3. Step 3: Cross multiply
   31,863.12x = 47,800.72 × 10,517.12
4. Step 4: Simplify right side
   31,863.12x = 502,725,908.33
5. Step 5: Solve for x
   x = 502,725,908.33/31,863.12
6. Step 6: Final answer
   x = 15,777.67