Finding the Fourth Proportional to 12,747.38, 17,599.86 and 7,974.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,747.38 : 17,599.86 = 7,974.54 : x
2. Step 2: Convert to fraction form
   12,747.38/17,599.86 = 7,974.54/x
3. Step 3: Cross multiply
   12,747.38x = 17,599.86 × 7,974.54
4. Step 4: Simplify right side
   12,747.38x = 140,350,787.56
5. Step 5: Solve for x
   x = 140,350,787.56/12,747.38
6. Step 6: Final answer
   x = 11,010.17