Finding the Fourth Proportional to 8,843.72, 12,205.51 and 5,709.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,843.72 : 12,205.51 = 5,709.02 : x
2. Step 2: Convert to fraction form
   8,843.72/12,205.51 = 5,709.02/x
3. Step 3: Cross multiply
   8,843.72x = 12,205.51 × 5,709.02
4. Step 4: Simplify right side
   8,843.72x = 69,681,500.70
5. Step 5: Solve for x
   x = 69,681,500.70/8,843.72
6. Step 6: Final answer
   x = 7,879.21