Finding the Fourth Proportional to 3,941.69, 5,439.29 and 2,173.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941.69 : 5,439.29 = 2,173.31 : x
2. Step 2: Convert to fraction form
   3,941.69/5,439.29 = 2,173.31/x
3. Step 3: Cross multiply
   3,941.69x = 5,439.29 × 2,173.31
4. Step 4: Simplify right side
   3,941.69x = 11,821,282.39
5. Step 5: Solve for x
   x = 11,821,282.39/3,941.69
6. Step 6: Final answer
   x = 2,999.04