Finding the Fourth Proportional to 7,086.79, 10,627.12 and 2,155.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,086.79 : 10,627.12 = 2,155.29 : x
2. Step 2: Convert to fraction form
   7,086.79/10,627.12 = 2,155.29/x
3. Step 3: Cross multiply
   7,086.79x = 10,627.12 × 2,155.29
4. Step 4: Simplify right side
   7,086.79x = 22,904,535.96
5. Step 5: Solve for x
   x = 22,904,535.96/7,086.79
6. Step 6: Final answer
   x = 3,232.00