Finding the Fourth Proportional to 22,747.28, 31,390.81 and 12,675.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,747.28 : 31,390.81 = 12,675.50 : x
2. Step 2: Convert to fraction form
   22,747.28/31,390.81 = 12,675.50/x
3. Step 3: Cross multiply
   22,747.28x = 31,390.81 × 12,675.50
4. Step 4: Simplify right side
   22,747.28x = 397,894,106.42
5. Step 5: Solve for x
   x = 397,894,106.42/22,747.28
6. Step 6: Final answer
   x = 17,491.94