Finding the Fourth Proportional to 22,148.72, 33,223.56 and 8,290.16

Step by Step Solution

1. Step 1: Write the proportion equation
   22,148.72 : 33,223.56 = 8,290.16 : x
2. Step 2: Convert to fraction form
   22,148.72/33,223.56 = 8,290.16/x
3. Step 3: Cross multiply
   22,148.72x = 33,223.56 × 8,290.16
4. Step 4: Simplify right side
   22,148.72x = 275,428,628.17
5. Step 5: Solve for x
   x = 275,428,628.17/22,148.72
6. Step 6: Final answer
   x = 12,435.42