Finding the Fourth Proportional to 5,139.96, 7,092.71 and 3,015.27

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.96 : 7,092.71 = 3,015.27 : x
2. Step 2: Convert to fraction form
   5,139.96/7,092.71 = 3,015.27/x
3. Step 3: Cross multiply
   5,139.96x = 7,092.71 × 3,015.27
4. Step 4: Simplify right side
   5,139.96x = 21,386,400.22
5. Step 5: Solve for x
   x = 21,386,400.22/5,139.96
6. Step 6: Final answer
   x = 4,160.81