Finding the Fourth Proportional to 22,818.43, 31,486.33 and 12,745.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,818.43 : 31,486.33 = 12,745.59 : x
2. Step 2: Convert to fraction form
   22,818.43/31,486.33 = 12,745.59/x
3. Step 3: Cross multiply
   22,818.43x = 31,486.33 × 12,745.59
4. Step 4: Simplify right side
   22,818.43x = 401,311,789.06
5. Step 5: Solve for x
   x = 401,311,789.06/22,818.43
6. Step 6: Final answer
   x = 17,587.18