Finding the Fourth Proportional to 9,756.53, 13,463.90 and 5,280.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,756.53 : 13,463.90 = 5,280.18 : x
2. Step 2: Convert to fraction form
   9,756.53/13,463.90 = 5,280.18/x
3. Step 3: Cross multiply
   9,756.53x = 13,463.90 × 5,280.18
4. Step 4: Simplify right side
   9,756.53x = 71,091,721.78
5. Step 5: Solve for x
   x = 71,091,721.78/9,756.53
6. Step 6: Final answer
   x = 7,286.58