Finding the Fourth Proportional to 5,111.85, 7,054.37 and 2,874.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.85 : 7,054.37 = 2,874.49 : x
2. Step 2: Convert to fraction form
   5,111.85/7,054.37 = 2,874.49/x
3. Step 3: Cross multiply
   5,111.85x = 7,054.37 × 2,874.49
4. Step 4: Simplify right side
   5,111.85x = 20,277,716.02
5. Step 5: Solve for x
   x = 20,277,716.02/5,111.85
6. Step 6: Final answer
   x = 3,966.81