Finding the Fourth Proportional to 22,818.37, 31,489.50 and 12,747.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,818.37 : 31,489.50 = 12,747.69 : x
2. Step 2: Convert to fraction form
   22,818.37/31,489.50 = 12,747.69/x
3. Step 3: Cross multiply
   22,818.37x = 31,489.50 × 12,747.69
4. Step 4: Simplify right side
   22,818.37x = 401,418,384.26
5. Step 5: Solve for x
   x = 401,418,384.26/22,818.37
6. Step 6: Final answer
   x = 17,591.90