Finding the Fourth Proportional to 8,630.88, 12,943.50 and 2,786.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,630.88 : 12,943.50 = 2,786.10 : x
2. Step 2: Convert to fraction form
   8,630.88/12,943.50 = 2,786.10/x
3. Step 3: Cross multiply
   8,630.88x = 12,943.50 × 2,786.10
4. Step 4: Simplify right side
   8,630.88x = 36,061,885.35
5. Step 5: Solve for x
   x = 36,061,885.35/8,630.88
6. Step 6: Final answer
   x = 4,178.24