Finding the Fourth Proportional to 5,112.15, 7,659.10 and 3,462.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,112.15 : 7,659.10 = 3,462.78 : x
2. Step 2: Convert to fraction form
   5,112.15/7,659.10 = 3,462.78/x
3. Step 3: Cross multiply
   5,112.15x = 7,659.10 × 3,462.78
4. Step 4: Simplify right side
   5,112.15x = 26,521,778.30
5. Step 5: Solve for x
   x = 26,521,778.30/5,112.15
6. Step 6: Final answer
   x = 5,187.99