Finding the Fourth Proportional to 8,401.91, 12,596.69 and 2,853.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,401.91 : 12,596.69 = 2,853.77 : x
2. Step 2: Convert to fraction form
   8,401.91/12,596.69 = 2,853.77/x
3. Step 3: Cross multiply
   8,401.91x = 12,596.69 × 2,853.77
4. Step 4: Simplify right side
   8,401.91x = 35,947,978.77
5. Step 5: Solve for x
   x = 35,947,978.77/8,401.91
6. Step 6: Final answer
   x = 4,278.55