Finding the Fourth Proportional to 5,105.49, 7,046.78 and 3,117.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.49 : 7,046.78 = 3,117.71 : x
2. Step 2: Convert to fraction form
   5,105.49/7,046.78 = 3,117.71/x
3. Step 3: Cross multiply
   5,105.49x = 7,046.78 × 3,117.71
4. Step 4: Simplify right side
   5,105.49x = 21,969,841.89
5. Step 5: Solve for x
   x = 21,969,841.89/5,105.49
6. Step 6: Final answer
   x = 4,303.18