Finding the Fourth Proportional to 3,960.76, 5,951.91 and 2,113.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.76 : 5,951.91 = 2,113.18 : x
2. Step 2: Convert to fraction form
   3,960.76/5,951.91 = 2,113.18/x
3. Step 3: Cross multiply
   3,960.76x = 5,951.91 × 2,113.18
4. Step 4: Simplify right side
   3,960.76x = 12,577,457.17
5. Step 5: Solve for x
   x = 12,577,457.17/3,960.76
6. Step 6: Final answer
   x = 3,175.52