Finding the Fourth Proportional to 22,810.38, 31,474.49 and 12,738.45

Step by Step Solution

1. Step 1: Write the proportion equation
   22,810.38 : 31,474.49 = 12,738.45 : x
2. Step 2: Convert to fraction form
   22,810.38/31,474.49 = 12,738.45/x
3. Step 3: Cross multiply
   22,810.38x = 31,474.49 × 12,738.45
4. Step 4: Simplify right side
   22,810.38x = 400,936,153.45
5. Step 5: Solve for x
   x = 400,936,153.45/22,810.38
6. Step 6: Final answer
   x = 17,576.92