Finding the Fourth Proportional to 5,112.83, 7,055.78 and 2,874.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,112.83 : 7,055.78 = 2,874.69 : x
2. Step 2: Convert to fraction form
   5,112.83/7,055.78 = 2,874.69/x
3. Step 3: Cross multiply
   5,112.83x = 7,055.78 × 2,874.69
4. Step 4: Simplify right side
   5,112.83x = 20,283,165.83
5. Step 5: Solve for x
   x = 20,283,165.83/5,112.83
6. Step 6: Final answer
   x = 3,967.12