Finding the Fourth Proportional to 8,913.82, 12,289.42 and 5,550.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,913.82 : 12,289.42 = 5,550.81 : x
2. Step 2: Convert to fraction form
   8,913.82/12,289.42 = 5,550.81/x
3. Step 3: Cross multiply
   8,913.82x = 12,289.42 × 5,550.81
4. Step 4: Simplify right side
   8,913.82x = 68,216,235.43
5. Step 5: Solve for x
   x = 68,216,235.43/8,913.82
6. Step 6: Final answer
   x = 7,652.86