Finding the Fourth Proportional to 8,631.83, 12,947.91 and 2,708.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,631.83 : 12,947.91 = 2,708.59 : x
2. Step 2: Convert to fraction form
   8,631.83/12,947.91 = 2,708.59/x
3. Step 3: Cross multiply
   8,631.83x = 12,947.91 × 2,708.59
4. Step 4: Simplify right side
   8,631.83x = 35,070,579.55
5. Step 5: Solve for x
   x = 35,070,579.55/8,631.83
6. Step 6: Final answer
   x = 4,062.94