Finding the Fourth Proportional to 22,282.72, 33,431 and 9,136.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,282.72 : 33,431 = 9,136.12 : x
2. Step 2: Convert to fraction form
   22,282.72/33,431 = 9,136.12/x
3. Step 3: Cross multiply
   22,282.72x = 33,431 × 9,136.12
4. Step 4: Simplify right side
   22,282.72x = 305,429,627.72
5. Step 5: Solve for x
   x = 305,429,627.72/22,282.72
6. Step 6: Final answer
   x = 13,707.02