Finding the Fourth Proportional to 3,973.78, 5,949.33 and 3,153.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,973.78 : 5,949.33 = 3,153.25 : x
2. Step 2: Convert to fraction form
   3,973.78/5,949.33 = 3,153.25/x
3. Step 3: Cross multiply
   3,973.78x = 5,949.33 × 3,153.25
4. Step 4: Simplify right side
   3,973.78x = 18,759,724.82
5. Step 5: Solve for x
   x = 18,759,724.82/3,973.78
6. Step 6: Final answer
   x = 4,720.88