Finding the Fourth Proportional to 22,818.69, 31,489.45 and 12,747.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,818.69 : 31,489.45 = 12,747.29 : x
2. Step 2: Convert to fraction form
   22,818.69/31,489.45 = 12,747.29/x
3. Step 3: Cross multiply
   22,818.69x = 31,489.45 × 12,747.29
4. Step 4: Simplify right side
   22,818.69x = 401,404,961.78
5. Step 5: Solve for x
   x = 401,404,961.78/22,818.69
6. Step 6: Final answer
   x = 17,591.06