Finding the Fourth Proportional to 5,340.18, 7,971.70 and 5,100.54

Step by Step Solution

1. Step 1: Write the proportion equation
   5,340.18 : 7,971.70 = 5,100.54 : x
2. Step 2: Convert to fraction form
   5,340.18/7,971.70 = 5,100.54/x
3. Step 3: Cross multiply
   5,340.18x = 7,971.70 × 5,100.54
4. Step 4: Simplify right side
   5,340.18x = 40,659,974.72
5. Step 5: Solve for x
   x = 40,659,974.72/5,340.18
6. Step 6: Final answer
   x = 7,613.97