Finding the Fourth Proportional to 31,456.75, 47,192.42 and 10,680.25

Step by Step Solution

1. Step 1: Write the proportion equation
   31,456.75 : 47,192.42 = 10,680.25 : x
2. Step 2: Convert to fraction form
   31,456.75/47,192.42 = 10,680.25/x
3. Step 3: Cross multiply
   31,456.75x = 47,192.42 × 10,680.25
4. Step 4: Simplify right side
   31,456.75x = 504,026,843.71
5. Step 5: Solve for x
   x = 504,026,843.71/31,456.75
6. Step 6: Final answer
   x = 16,022.85