Finding the Fourth Proportional to 31,766.31, 43,839.50 and 18,340.02

Step by Step Solution

1. Step 1: Write the proportion equation
   31,766.31 : 43,839.50 = 18,340.02 : x
2. Step 2: Convert to fraction form
   31,766.31/43,839.50 = 18,340.02/x
3. Step 3: Cross multiply
   31,766.31x = 43,839.50 × 18,340.02
4. Step 4: Simplify right side
   31,766.31x = 804,017,215.09
5. Step 5: Solve for x
   x = 804,017,215.09/31,766.31
6. Step 6: Final answer
   x = 25,310.37