Finding the Fourth Proportional to 31,385.71, 47,078.53 and 8,012.16

Step by Step Solution

1. Step 1: Write the proportion equation
   31,385.71 : 47,078.53 = 8,012.16 : x
2. Step 2: Convert to fraction form
   31,385.71/47,078.53 = 8,012.16/x
3. Step 3: Cross multiply
   31,385.71x = 47,078.53 × 8,012.16
4. Step 4: Simplify right side
   31,385.71x = 377,200,714.92
5. Step 5: Solve for x
   x = 377,200,714.92/31,385.71
6. Step 6: Final answer
   x = 12,018.23