Finding the Fourth Proportional to 8,443.28, 12,661.25 and 3,245.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,443.28 : 12,661.25 = 3,245.50 : x
2. Step 2: Convert to fraction form
   8,443.28/12,661.25 = 3,245.50/x
3. Step 3: Cross multiply
   8,443.28x = 12,661.25 × 3,245.50
4. Step 4: Simplify right side
   8,443.28x = 41,092,086.88
5. Step 5: Solve for x
   x = 41,092,086.88/8,443.28
6. Step 6: Final answer
   x = 4,866.84