Finding the Fourth Proportional to 8,818.56, 12,168.24 and 5,679

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.56 : 12,168.24 = 5,679 : x
2. Step 2: Convert to fraction form
   8,818.56/12,168.24 = 5,679/x
3. Step 3: Cross multiply
   8,818.56x = 12,168.24 × 5,679
4. Step 4: Simplify right side
   8,818.56x = 69,103,434.96
5. Step 5: Solve for x
   x = 69,103,434.96/8,818.56
6. Step 6: Final answer
   x = 7,836.14