Finding the Fourth Proportional to 8,488.92, 12,738.33 and 3,558.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.92 : 12,738.33 = 3,558.18 : x
2. Step 2: Convert to fraction form
   8,488.92/12,738.33 = 3,558.18/x
3. Step 3: Cross multiply
   8,488.92x = 12,738.33 × 3,558.18
4. Step 4: Simplify right side
   8,488.92x = 45,325,271.04
5. Step 5: Solve for x
   x = 45,325,271.04/8,488.92
6. Step 6: Final answer
   x = 5,339.34