Finding the Fourth Proportional to 9,478.24, 13,080.63 and 5,286.49

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.24 : 13,080.63 = 5,286.49 : x
2. Step 2: Convert to fraction form
   9,478.24/13,080.63 = 5,286.49/x
3. Step 3: Cross multiply
   9,478.24x = 13,080.63 × 5,286.49
4. Step 4: Simplify right side
   9,478.24x = 69,150,619.69
5. Step 5: Solve for x
   x = 69,150,619.69/9,478.24
6. Step 6: Final answer
   x = 7,295.72