Finding the Fourth Proportional to 7,040.69, 10,571.42 and 3,926.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,040.69 : 10,571.42 = 3,926.78 : x
2. Step 2: Convert to fraction form
   7,040.69/10,571.42 = 3,926.78/x
3. Step 3: Cross multiply
   7,040.69x = 10,571.42 × 3,926.78
4. Step 4: Simplify right side
   7,040.69x = 41,511,640.63
5. Step 5: Solve for x
   x = 41,511,640.63/7,040.69
6. Step 6: Final answer
   x = 5,895.96