Finding the Fourth Proportional to 8,648.87, 12,971.94 and 5,550.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,648.87 : 12,971.94 = 5,550.54 : x
2. Step 2: Convert to fraction form
   8,648.87/12,971.94 = 5,550.54/x
3. Step 3: Cross multiply
   8,648.87x = 12,971.94 × 5,550.54
4. Step 4: Simplify right side
   8,648.87x = 72,001,271.85
5. Step 5: Solve for x
   x = 72,001,271.85/8,648.87
6. Step 6: Final answer
   x = 8,324.94