Finding the Fourth Proportional to 7,960.76, 10,978.16 and 5,270.75

Step by Step Solution

1. Step 1: Write the proportion equation
   7,960.76 : 10,978.16 = 5,270.75 : x
2. Step 2: Convert to fraction form
   7,960.76/10,978.16 = 5,270.75/x
3. Step 3: Cross multiply
   7,960.76x = 10,978.16 × 5,270.75
4. Step 4: Simplify right side
   7,960.76x = 57,863,136.82
5. Step 5: Solve for x
   x = 57,863,136.82/7,960.76
6. Step 6: Final answer
   x = 7,268.54