Finding the Fourth Proportional to 8,574.72, 12,863.42 and 3,644.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,574.72 : 12,863.42 = 3,644.38 : x
2. Step 2: Convert to fraction form
   8,574.72/12,863.42 = 3,644.38/x
3. Step 3: Cross multiply
   8,574.72x = 12,863.42 × 3,644.38
4. Step 4: Simplify right side
   8,574.72x = 46,879,190.58
5. Step 5: Solve for x
   x = 46,879,190.58/8,574.72
6. Step 6: Final answer
   x = 5,467.14