Finding the Fourth Proportional to 7,078.43, 10,616.46 and 2,146.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.43 : 10,616.46 = 2,146.89 : x
2. Step 2: Convert to fraction form
   7,078.43/10,616.46 = 2,146.89/x
3. Step 3: Cross multiply
   7,078.43x = 10,616.46 × 2,146.89
4. Step 4: Simplify right side
   7,078.43x = 22,792,371.81
5. Step 5: Solve for x
   x = 22,792,371.81/7,078.43
6. Step 6: Final answer
   x = 3,219.98