Finding the Fourth Proportional to 3,942.32, 5,440.50 and 2,173.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.32 : 5,440.50 = 2,173.82 : x
2. Step 2: Convert to fraction form
   3,942.32/5,440.50 = 2,173.82/x
3. Step 3: Cross multiply
   3,942.32x = 5,440.50 × 2,173.82
4. Step 4: Simplify right side
   3,942.32x = 11,826,640.51
5. Step 5: Solve for x
   x = 11,826,640.51/3,942.32
6. Step 6: Final answer
   x = 2,999.92