Finding the Fourth Proportional to 31,206.72, 43,086.05 and 18,464

Step by Step Solution

1. Step 1: Write the proportion equation
   31,206.72 : 43,086.05 = 18,464 : x
2. Step 2: Convert to fraction form
   31,206.72/43,086.05 = 18,464/x
3. Step 3: Cross multiply
   31,206.72x = 43,086.05 × 18,464
4. Step 4: Simplify right side
   31,206.72x = 795,540,827.20
5. Step 5: Solve for x
   x = 795,540,827.20/31,206.72
6. Step 6: Final answer
   x = 25,492.61