Finding the Fourth Proportional to 8,868.92, 12,237.42 and 5,555

Step by Step Solution

1. Step 1: Write the proportion equation
   8,868.92 : 12,237.42 = 5,555 : x
2. Step 2: Convert to fraction form
   8,868.92/12,237.42 = 5,555/x
3. Step 3: Cross multiply
   8,868.92x = 12,237.42 × 5,555
4. Step 4: Simplify right side
   8,868.92x = 67,978,868.10
5. Step 5: Solve for x
   x = 67,978,868.10/8,868.92
6. Step 6: Final answer
   x = 7,664.84