Finding the Fourth Proportional to 12,709.28, 17,536.56 and 7,672.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,709.28 : 17,536.56 = 7,672.16 : x
2. Step 2: Convert to fraction form
   12,709.28/17,536.56 = 7,672.16/x
3. Step 3: Cross multiply
   12,709.28x = 17,536.56 × 7,672.16
4. Step 4: Simplify right side
   12,709.28x = 134,543,294.17
5. Step 5: Solve for x
   x = 134,543,294.17/12,709.28
6. Step 6: Final answer
   x = 10,586.22