Finding the Fourth Proportional to 31,870.97, 47,811.92 and 9,686.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,870.97 : 47,811.92 = 9,686.59 : x
2. Step 2: Convert to fraction form
   31,870.97/47,811.92 = 9,686.59/x
3. Step 3: Cross multiply
   31,870.97x = 47,811.92 × 9,686.59
4. Step 4: Simplify right side
   31,870.97x = 463,134,466.15
5. Step 5: Solve for x
   x = 463,134,466.15/31,870.97
6. Step 6: Final answer
   x = 14,531.55