Finding the Fourth Proportional to 5,169.94, 7,134.55 and 2,812.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,169.94 : 7,134.55 = 2,812.10 : x
2. Step 2: Convert to fraction form
   5,169.94/7,134.55 = 2,812.10/x
3. Step 3: Cross multiply
   5,169.94x = 7,134.55 × 2,812.10
4. Step 4: Simplify right side
   5,169.94x = 20,063,025.35
5. Step 5: Solve for x
   x = 20,063,025.35/5,169.94
6. Step 6: Final answer
   x = 3,880.71