Finding the Fourth Proportional to 8,571.30, 12,856.41 and 2,732.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,571.30 : 12,856.41 = 2,732.10 : x
2. Step 2: Convert to fraction form
   8,571.30/12,856.41 = 2,732.10/x
3. Step 3: Cross multiply
   8,571.30x = 12,856.41 × 2,732.10
4. Step 4: Simplify right side
   8,571.30x = 35,124,997.76
5. Step 5: Solve for x
   x = 35,124,997.76/8,571.30
6. Step 6: Final answer
   x = 4,097.98