Finding the Fourth Proportional to 7,672.56, 11,493.72 and 7,132.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,672.56 : 11,493.72 = 7,132.56 : x
2. Step 2: Convert to fraction form
   7,672.56/11,493.72 = 7,132.56/x
3. Step 3: Cross multiply
   7,672.56x = 11,493.72 × 7,132.56
4. Step 4: Simplify right side
   7,672.56x = 81,979,647.52
5. Step 5: Solve for x
   x = 81,979,647.52/7,672.56
6. Step 6: Final answer
   x = 10,684.78