Finding the Fourth Proportional to 8,100.83, 12,154.77 and 2,839.63

Step by Step Solution

1. Step 1: Write the proportion equation
   8,100.83 : 12,154.77 = 2,839.63 : x
2. Step 2: Convert to fraction form
   8,100.83/12,154.77 = 2,839.63/x
3. Step 3: Cross multiply
   8,100.83x = 12,154.77 × 2,839.63
4. Step 4: Simplify right side
   8,100.83x = 34,515,019.15
5. Step 5: Solve for x
   x = 34,515,019.15/8,100.83
6. Step 6: Final answer
   x = 4,260.68