Finding the Fourth Proportional to 7,937.40, 10,939.86 and 5,280.24

Step by Step Solution

1. Step 1: Write the proportion equation
   7,937.40 : 10,939.86 = 5,280.24 : x
2. Step 2: Convert to fraction form
   7,937.40/10,939.86 = 5,280.24/x
3. Step 3: Cross multiply
   7,937.40x = 10,939.86 × 5,280.24
4. Step 4: Simplify right side
   7,937.40x = 57,765,086.37
5. Step 5: Solve for x
   x = 57,765,086.37/7,937.40
6. Step 6: Final answer
   x = 7,277.58