Finding the Fourth Proportional to 3,968.33, 5,954.31 and 3,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,968.33 : 5,954.31 = 3,902.72 : x
2. Step 2: Convert to fraction form
   3,968.33/5,954.31 = 3,902.72/x
3. Step 3: Cross multiply
   3,968.33x = 5,954.31 × 3,902.72
4. Step 4: Simplify right side
   3,968.33x = 23,237,974.95
5. Step 5: Solve for x
   x = 23,237,974.95/3,968.33
6. Step 6: Final answer
   x = 5,855.86