Finding the Fourth Proportional to 8,890.48, 12,268.83 and 5,114.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,890.48 : 12,268.83 = 5,114.40 : x
2. Step 2: Convert to fraction form
   8,890.48/12,268.83 = 5,114.40/x
3. Step 3: Cross multiply
   8,890.48x = 12,268.83 × 5,114.40
4. Step 4: Simplify right side
   8,890.48x = 62,747,704.15
5. Step 5: Solve for x
   x = 62,747,704.15/8,890.48
6. Step 6: Final answer
   x = 7,057.85