Finding the Fourth Proportional to 8,641.83, 12,962.67 and 3,960.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,641.83 : 12,962.67 = 3,960.52 : x
2. Step 2: Convert to fraction form
   8,641.83/12,962.67 = 3,960.52/x
3. Step 3: Cross multiply
   8,641.83x = 12,962.67 × 3,960.52
4. Step 4: Simplify right side
   8,641.83x = 51,338,866.53
5. Step 5: Solve for x
   x = 51,338,866.53/8,641.83
6. Step 6: Final answer
   x = 5,940.74