Finding the Fourth Proportional to 8,380.42, 12,571.99 and 2,834.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,380.42 : 12,571.99 = 2,834.10 : x
2. Step 2: Convert to fraction form
   8,380.42/12,571.99 = 2,834.10/x
3. Step 3: Cross multiply
   8,380.42x = 12,571.99 × 2,834.10
4. Step 4: Simplify right side
   8,380.42x = 35,630,269.77
5. Step 5: Solve for x
   x = 35,630,269.77/8,380.42
6. Step 6: Final answer
   x = 4,251.61