Finding the Fourth Proportional to 12,382.72, 17,096.16 and 7,672

Step by Step Solution

1. Step 1: Write the proportion equation
   12,382.72 : 17,096.16 = 7,672 : x
2. Step 2: Convert to fraction form
   12,382.72/17,096.16 = 7,672/x
3. Step 3: Cross multiply
   12,382.72x = 17,096.16 × 7,672
4. Step 4: Simplify right side
   12,382.72x = 131,161,739.52
5. Step 5: Solve for x
   x = 131,161,739.52/12,382.72
6. Step 6: Final answer
   x = 10,592.32