Finding the Fourth Proportional to 11,355.72, 17,033.16 and 3,960.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,355.72 : 17,033.16 = 3,960.15 : x
2. Step 2: Convert to fraction form
   11,355.72/17,033.16 = 3,960.15/x
3. Step 3: Cross multiply
   11,355.72x = 17,033.16 × 3,960.15
4. Step 4: Simplify right side
   11,355.72x = 67,453,868.57
5. Step 5: Solve for x
   x = 67,453,868.57/11,355.72
6. Step 6: Final answer
   x = 5,940.08