Finding the Fourth Proportional to 3,961.15, 5,947.72 and 3,146.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,961.15 : 5,947.72 = 3,146.03 : x
2. Step 2: Convert to fraction form
   3,961.15/5,947.72 = 3,146.03/x
3. Step 3: Cross multiply
   3,961.15x = 5,947.72 × 3,146.03
4. Step 4: Simplify right side
   3,961.15x = 18,711,705.55
5. Step 5: Solve for x
   x = 18,711,705.55/3,961.15
6. Step 6: Final answer
   x = 4,723.81