Finding the Fourth Proportional to 2,893.55, 3,995.40 and 2,672.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,893.55 : 3,995.40 = 2,672.42 : x
2. Step 2: Convert to fraction form
   2,893.55/3,995.40 = 2,672.42/x
3. Step 3: Cross multiply
   2,893.55x = 3,995.40 × 2,672.42
4. Step 4: Simplify right side
   2,893.55x = 10,677,366.89
5. Step 5: Solve for x
   x = 10,677,366.89/2,893.55
6. Step 6: Final answer
   x = 3,690.06