Finding the Fourth Proportional to 5,111.75, 7,054.15 and 2,874.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,111.75 : 7,054.15 = 2,874.01 : x
2. Step 2: Convert to fraction form
   5,111.75/7,054.15 = 2,874.01/x
3. Step 3: Cross multiply
   5,111.75x = 7,054.15 × 2,874.01
4. Step 4: Simplify right side
   5,111.75x = 20,273,697.64
5. Step 5: Solve for x
   x = 20,273,697.64/5,111.75
6. Step 6: Final answer
   x = 3,966.10