Finding the Fourth Proportional to 8,380.49, 12,570.34 and 2,834.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,380.49 : 12,570.34 = 2,834.06 : x
2. Step 2: Convert to fraction form
   8,380.49/12,570.34 = 2,834.06/x
3. Step 3: Cross multiply
   8,380.49x = 12,570.34 × 2,834.06
4. Step 4: Simplify right side
   8,380.49x = 35,625,097.78
5. Step 5: Solve for x
   x = 35,625,097.78/8,380.49
6. Step 6: Final answer
   x = 4,250.96