Finding the Fourth Proportional to 31,414.71, 47,103.82 and 12,679.41

Step by Step Solution

1. Step 1: Write the proportion equation
   31,414.71 : 47,103.82 = 12,679.41 : x
2. Step 2: Convert to fraction form
   31,414.71/47,103.82 = 12,679.41/x
3. Step 3: Cross multiply
   31,414.71x = 47,103.82 × 12,679.41
4. Step 4: Simplify right side
   31,414.71x = 597,248,646.35
5. Step 5: Solve for x
   x = 597,248,646.35/31,414.71
6. Step 6: Final answer
   x = 19,011.75