Finding the Fourth Proportional to 4,965.91, 6,853.55 and 2,870.03

Step by Step Solution

1. Step 1: Write the proportion equation
   4,965.91 : 6,853.55 = 2,870.03 : x
2. Step 2: Convert to fraction form
   4,965.91/6,853.55 = 2,870.03/x
3. Step 3: Cross multiply
   4,965.91x = 6,853.55 × 2,870.03
4. Step 4: Simplify right side
   4,965.91x = 19,669,896.89
5. Step 5: Solve for x
   x = 19,669,896.89/4,965.91
6. Step 6: Final answer
   x = 3,960.99