Finding the Fourth Proportional to 3,960.84, 5,946.12 and 3,630.36

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.84 : 5,946.12 = 3,630.36 : x
2. Step 2: Convert to fraction form
   3,960.84/5,946.12 = 3,630.36/x
3. Step 3: Cross multiply
   3,960.84x = 5,946.12 × 3,630.36
4. Step 4: Simplify right side
   3,960.84x = 21,586,556.20
5. Step 5: Solve for x
   x = 21,586,556.20/3,960.84
6. Step 6: Final answer
   x = 5,449.99