Finding the Fourth Proportional to 8,571.02, 12,860.16 and 3,641.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,571.02 : 12,860.16 = 3,641.72 : x
2. Step 2: Convert to fraction form
   8,571.02/12,860.16 = 3,641.72/x
3. Step 3: Cross multiply
   8,571.02x = 12,860.16 × 3,641.72
4. Step 4: Simplify right side
   8,571.02x = 46,833,101.88
5. Step 5: Solve for x
   x = 46,833,101.88/8,571.02
6. Step 6: Final answer
   x = 5,464.12