Finding the Fourth Proportional to 12,393.52, 17,096.72 and 7,912.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,393.52 : 17,096.72 = 7,912.56 : x
2. Step 2: Convert to fraction form
   12,393.52/17,096.72 = 7,912.56/x
3. Step 3: Cross multiply
   12,393.52x = 17,096.72 × 7,912.56
4. Step 4: Simplify right side
   12,393.52x = 135,278,843.78
5. Step 5: Solve for x
   x = 135,278,843.78/12,393.52
6. Step 6: Final answer
   x = 10,915.29