Finding the Fourth Proportional to 5,146.90, 7,103.15 and 4,306.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,146.90 : 7,103.15 = 4,306.12 : x
2. Step 2: Convert to fraction form
   5,146.90/7,103.15 = 4,306.12/x
3. Step 3: Cross multiply
   5,146.90x = 7,103.15 × 4,306.12
4. Step 4: Simplify right side
   5,146.90x = 30,587,016.28
5. Step 5: Solve for x
   x = 30,587,016.28/5,146.90
6. Step 6: Final answer
   x = 5,942.80