Finding the Fourth Proportional to 5,112.59, 7,055.34 and 2,874.47

Step by Step Solution

1. Step 1: Write the proportion equation
   5,112.59 : 7,055.34 = 2,874.47 : x
2. Step 2: Convert to fraction form
   5,112.59/7,055.34 = 2,874.47/x
3. Step 3: Cross multiply
   5,112.59x = 7,055.34 × 2,874.47
4. Step 4: Simplify right side
   5,112.59x = 20,280,363.17
5. Step 5: Solve for x
   x = 20,280,363.17/5,112.59
6. Step 6: Final answer
   x = 3,966.75