Finding the Fourth Proportional to 7,766.56, 10,715.52 and 7,018.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766.56 : 10,715.52 = 7,018.12 : x
2. Step 2: Convert to fraction form
   7,766.56/10,715.52 = 7,018.12/x
3. Step 3: Cross multiply
   7,766.56x = 10,715.52 × 7,018.12
4. Step 4: Simplify right side
   7,766.56x = 75,202,805.22
5. Step 5: Solve for x
   x = 75,202,805.22/7,766.56
6. Step 6: Final answer
   x = 9,682.90