Finding the Fourth Proportional to 31,419.39, 47,116.68 and 12,695.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,419.39 : 47,116.68 = 12,695.89 : x
2. Step 2: Convert to fraction form
   31,419.39/47,116.68 = 12,695.89/x
3. Step 3: Cross multiply
   31,419.39x = 47,116.68 × 12,695.89
4. Step 4: Simplify right side
   31,419.39x = 598,188,186.45
5. Step 5: Solve for x
   x = 598,188,186.45/31,419.39
6. Step 6: Final answer
   x = 19,038.82