Finding the Fourth Proportional to 9,287.24, 12,807.06 and 5,563.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,287.24 : 12,807.06 = 5,563.40 : x
2. Step 2: Convert to fraction form
   9,287.24/12,807.06 = 5,563.40/x
3. Step 3: Cross multiply
   9,287.24x = 12,807.06 × 5,563.40
4. Step 4: Simplify right side
   9,287.24x = 71,250,797.60
5. Step 5: Solve for x
   x = 71,250,797.60/9,287.24
6. Step 6: Final answer
   x = 7,671.90