Finding the Fourth Proportional to 3,940.56, 5,436.72 and 2,368.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.56 : 5,436.72 = 2,368.08 : x
2. Step 2: Convert to fraction form
   3,940.56/5,436.72 = 2,368.08/x
3. Step 3: Cross multiply
   3,940.56x = 5,436.72 × 2,368.08
4. Step 4: Simplify right side
   3,940.56x = 12,874,587.90
5. Step 5: Solve for x
   x = 12,874,587.90/3,940.56
6. Step 6: Final answer
   x = 3,267.20