Finding the Fourth Proportional to 22,145.72, 33,219.06 and 8,287.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,145.72 : 33,219.06 = 8,287.16 : x
2. Step 2: Convert to fraction form
   22,145.72/33,219.06 = 8,287.16/x
3. Step 3: Cross multiply
   22,145.72x = 33,219.06 × 8,287.16
4. Step 4: Simplify right side
   22,145.72x = 275,291,665.27
5. Step 5: Solve for x
   x = 275,291,665.27/22,145.72
6. Step 6: Final answer
   x = 12,430.92