Finding the Fourth Proportional to 8,800.96, 13,169.98 and 7,644.59

Step by Step Solution

1. Step 1: Write the proportion equation
   8,800.96 : 13,169.98 = 7,644.59 : x
2. Step 2: Convert to fraction form
   8,800.96/13,169.98 = 7,644.59/x
3. Step 3: Cross multiply
   8,800.96x = 13,169.98 × 7,644.59
4. Step 4: Simplify right side
   8,800.96x = 100,678,993.34
5. Step 5: Solve for x
   x = 100,678,993.34/8,800.96
6. Step 6: Final answer
   x = 11,439.55