Finding the Fourth Proportional to 5,111.91, 7,054.08 and 2,874.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.91 : 7,054.08 = 2,874.12 : x
2. Step 2: Convert to fraction form
   5,111.91/7,054.08 = 2,874.12/x
3. Step 3: Cross multiply
   5,111.91x = 7,054.08 × 2,874.12
4. Step 4: Simplify right side
   5,111.91x = 20,274,272.41
5. Step 5: Solve for x
   x = 20,274,272.41/5,111.91
6. Step 6: Final answer
   x = 3,966.09