Finding the Fourth Proportional to 8,443.76, 12,661.92 and 4,494.07

Step by Step Solution

1. Step 1: Write the proportion equation
   8,443.76 : 12,661.92 = 4,494.07 : x
2. Step 2: Convert to fraction form
   8,443.76/12,661.92 = 4,494.07/x
3. Step 3: Cross multiply
   8,443.76x = 12,661.92 × 4,494.07
4. Step 4: Simplify right side
   8,443.76x = 56,903,491.50
5. Step 5: Solve for x
   x = 56,903,491.50/8,443.76
6. Step 6: Final answer
   x = 6,739.12