Finding the Fourth Proportional to 9,756.21, 13,463.55 and 5,280.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,756.21 : 13,463.55 = 5,280.04 : x
2. Step 2: Convert to fraction form
   9,756.21/13,463.55 = 5,280.04/x
3. Step 3: Cross multiply
   9,756.21x = 13,463.55 × 5,280.04
4. Step 4: Simplify right side
   9,756.21x = 71,088,082.54
5. Step 5: Solve for x
   x = 71,088,082.54/9,756.21
6. Step 6: Final answer
   x = 7,286.44