Finding the Fourth Proportional to 3,975.42, 5,994.96 and 3,920.73

Step by Step Solution

1. Step 1: Write the proportion equation
   3,975.42 : 5,994.96 = 3,920.73 : x
2. Step 2: Convert to fraction form
   3,975.42/5,994.96 = 3,920.73/x
3. Step 3: Cross multiply
   3,975.42x = 5,994.96 × 3,920.73
4. Step 4: Simplify right side
   3,975.42x = 23,504,619.52
5. Step 5: Solve for x
   x = 23,504,619.52/3,975.42
6. Step 6: Final answer
   x = 5,912.49