Finding the Fourth Proportional to 8,630.83, 12,943.50 and 2,786.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,630.83 : 12,943.50 = 2,786.08 : x
2. Step 2: Convert to fraction form
   8,630.83/12,943.50 = 2,786.08/x
3. Step 3: Cross multiply
   8,630.83x = 12,943.50 × 2,786.08
4. Step 4: Simplify right side
   8,630.83x = 36,061,626.48
5. Step 5: Solve for x
   x = 36,061,626.48/8,630.83
6. Step 6: Final answer
   x = 4,178.23