Finding the Fourth Proportional to 3,960.17, 5,464.81 and 2,191.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,960.17 : 5,464.81 = 2,191.69 : x
2. Step 2: Convert to fraction form
   3,960.17/5,464.81 = 2,191.69/x
3. Step 3: Cross multiply
   3,960.17x = 5,464.81 × 2,191.69
4. Step 4: Simplify right side
   3,960.17x = 11,977,169.43
5. Step 5: Solve for x
   x = 11,977,169.43/3,960.17
6. Step 6: Final answer
   x = 3,024.41