Finding the Fourth Proportional to 7,086.62, 10,626.84 and 2,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.62 : 10,626.84 = 2,155.10 : x
2. Step 2: Convert to fraction form
   7,086.62/10,626.84 = 2,155.10/x
3. Step 3: Cross multiply
   7,086.62x = 10,626.84 × 2,155.10
4. Step 4: Simplify right side
   7,086.62x = 22,901,849.75
5. Step 5: Solve for x
   x = 22,901,849.75/7,086.62
6. Step 6: Final answer
   x = 3,231.71