Finding the Fourth Proportional to 5,148.78, 7,105.38 and 2,910.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,148.78 : 7,105.38 = 2,910.48 : x
2. Step 2: Convert to fraction form
   5,148.78/7,105.38 = 2,910.48/x
3. Step 3: Cross multiply
   5,148.78x = 7,105.38 × 2,910.48
4. Step 4: Simplify right side
   5,148.78x = 20,680,066.38
5. Step 5: Solve for x
   x = 20,680,066.38/5,148.78
6. Step 6: Final answer
   x = 4,016.50