Finding the Fourth Proportional to 8,665.99, 12,996.65 and 4,282.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,665.99 : 12,996.65 = 4,282.27 : x
2. Step 2: Convert to fraction form
   8,665.99/12,996.65 = 4,282.27/x
3. Step 3: Cross multiply
   8,665.99x = 12,996.65 × 4,282.27
4. Step 4: Simplify right side
   8,665.99x = 55,655,142.61
5. Step 5: Solve for x
   x = 55,655,142.61/8,665.99
6. Step 6: Final answer
   x = 6,422.25