Finding the Fourth Proportional to 3,941.91, 5,439.83 and 2,173.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941.91 : 5,439.83 = 2,173.63 : x
2. Step 2: Convert to fraction form
   3,941.91/5,439.83 = 2,173.63/x
3. Step 3: Cross multiply
   3,941.91x = 5,439.83 × 2,173.63
4. Step 4: Simplify right side
   3,941.91x = 11,824,169.52
5. Step 5: Solve for x
   x = 11,824,169.52/3,941.91
6. Step 6: Final answer
   x = 2,999.60