Finding the Fourth Proportional to 3,162.72, 4,722.19 and 2,965.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,162.72 : 4,722.19 = 2,965.89 : x
2. Step 2: Convert to fraction form
   3,162.72/4,722.19 = 2,965.89/x
3. Step 3: Cross multiply
   3,162.72x = 4,722.19 × 2,965.89
4. Step 4: Simplify right side
   3,162.72x = 14,005,496.10
5. Step 5: Solve for x
   x = 14,005,496.10/3,162.72
6. Step 6: Final answer
   x = 4,428.31