Finding the Fourth Proportional to 3,869.33, 5,339.78 and 2,276.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.33 : 5,339.78 = 2,276.09 : x
2. Step 2: Convert to fraction form
   3,869.33/5,339.78 = 2,276.09/x
3. Step 3: Cross multiply
   3,869.33x = 5,339.78 × 2,276.09
4. Step 4: Simplify right side
   3,869.33x = 12,153,781.78
5. Step 5: Solve for x
   x = 12,153,781.78/3,869.33
6. Step 6: Final answer
   x = 3,141.06