Finding the Fourth Proportional to 7,674.56, 11,496.72 and 7,134.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,674.56 : 11,496.72 = 7,134.56 : x
2. Step 2: Convert to fraction form
   7,674.56/11,496.72 = 7,134.56/x
3. Step 3: Cross multiply
   7,674.56x = 11,496.72 × 7,134.56
4. Step 4: Simplify right side
   7,674.56x = 82,024,038.64
5. Step 5: Solve for x
   x = 82,024,038.64/7,674.56
6. Step 6: Final answer
   x = 10,687.78