Finding the Fourth Proportional to 8,476.56, 12,711.60 and 7,018.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,476.56 : 12,711.60 = 7,018.56 : x
2. Step 2: Convert to fraction form
   8,476.56/12,711.60 = 7,018.56/x
3. Step 3: Cross multiply
   8,476.56x = 12,711.60 × 7,018.56
4. Step 4: Simplify right side
   8,476.56x = 89,217,127.30
5. Step 5: Solve for x
   x = 89,217,127.30/8,476.56
6. Step 6: Final answer
   x = 10,525.16