Finding the Fourth Proportional to 22,287.72, 30,735.76 and 13,333.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,287.72 : 30,735.76 = 13,333.80 : x
2. Step 2: Convert to fraction form
   22,287.72/30,735.76 = 13,333.80/x
3. Step 3: Cross multiply
   22,287.72x = 30,735.76 × 13,333.80
4. Step 4: Simplify right side
   22,287.72x = 409,824,476.69
5. Step 5: Solve for x
   x = 409,824,476.69/22,287.72
6. Step 6: Final answer
   x = 18,387.90