Finding the Fourth Proportional to 9,756.39, 13,463.82 and 5,280.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,756.39 : 13,463.82 = 5,280.15 : x
2. Step 2: Convert to fraction form
   9,756.39/13,463.82 = 5,280.15/x
3. Step 3: Cross multiply
   9,756.39x = 13,463.82 × 5,280.15
4. Step 4: Simplify right side
   9,756.39x = 71,090,989.17
5. Step 5: Solve for x
   x = 71,090,989.17/9,756.39
6. Step 6: Final answer
   x = 7,286.61