Finding the Fourth Proportional to 31,540.02, 43,520.49 and 18,111.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,540.02 : 43,520.49 = 18,111.84 : x
2. Step 2: Convert to fraction form
   31,540.02/43,520.49 = 18,111.84/x
3. Step 3: Cross multiply
   31,540.02x = 43,520.49 × 18,111.84
4. Step 4: Simplify right side
   31,540.02x = 788,236,151.60
5. Step 5: Solve for x
   x = 788,236,151.60/31,540.02
6. Step 6: Final answer
   x = 24,991.62