Finding the Fourth Proportional to 31,479.32, 47,227.15 and 13,944.98

Step by Step Solution

1. Step 1: Write the proportion equation
   31,479.32 : 47,227.15 = 13,944.98 : x
2. Step 2: Convert to fraction form
   31,479.32/47,227.15 = 13,944.98/x
3. Step 3: Cross multiply
   31,479.32x = 47,227.15 × 13,944.98
4. Step 4: Simplify right side
   31,479.32x = 658,581,797.71
5. Step 5: Solve for x
   x = 658,581,797.71/31,479.32
6. Step 6: Final answer
   x = 20,921.09