Finding the Fourth Proportional to 8,300.28, 12,443.90 and 5,661.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.28 : 12,443.90 = 5,661.24 : x
2. Step 2: Convert to fraction form
   8,300.28/12,443.90 = 5,661.24/x
3. Step 3: Cross multiply
   8,300.28x = 12,443.90 × 5,661.24
4. Step 4: Simplify right side
   8,300.28x = 70,447,904.44
5. Step 5: Solve for x
   x = 70,447,904.44/8,300.28
6. Step 6: Final answer
   x = 8,487.41