Finding the Fourth Proportional to 9,756.49, 13,463.97 and 5,280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,756.49 : 13,463.97 = 5,280.25 : x
2. Step 2: Convert to fraction form
   9,756.49/13,463.97 = 5,280.25/x
3. Step 3: Cross multiply
   9,756.49x = 13,463.97 × 5,280.25
4. Step 4: Simplify right side
   9,756.49x = 71,093,127.59
5. Step 5: Solve for x
   x = 71,093,127.59/9,756.49
6. Step 6: Final answer
   x = 7,286.75