Finding the Fourth Proportional to 8,436.65, 12,647.78 and 5,963.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,436.65 : 12,647.78 = 5,963.69 : x
2. Step 2: Convert to fraction form
   8,436.65/12,647.78 = 5,963.69/x
3. Step 3: Cross multiply
   8,436.65x = 12,647.78 × 5,963.69
4. Step 4: Simplify right side
   8,436.65x = 75,427,409.29
5. Step 5: Solve for x
   x = 75,427,409.29/8,436.65
6. Step 6: Final answer
   x = 8,940.45