Finding the Fourth Proportional to 8,662.57, 12,995.22 and 2,817.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,662.57 : 12,995.22 = 2,817.82 : x
2. Step 2: Convert to fraction form
   8,662.57/12,995.22 = 2,817.82/x
3. Step 3: Cross multiply
   8,662.57x = 12,995.22 × 2,817.82
4. Step 4: Simplify right side
   8,662.57x = 36,618,190.82
5. Step 5: Solve for x
   x = 36,618,190.82/8,662.57
6. Step 6: Final answer
   x = 4,227.17