Finding the Fourth Proportional to 22,218.00, 30,663.71 and 12,661.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,218.00 : 30,663.71 = 12,661.33 : x
2. Step 2: Convert to fraction form
   22,218.00/30,663.71 = 12,661.33/x
3. Step 3: Cross multiply
   22,218.00x = 30,663.71 × 12,661.33
4. Step 4: Simplify right side
   22,218.00x = 388,243,387.56
5. Step 5: Solve for x
   x = 388,243,387.56/22,218.00
6. Step 6: Final answer
   x = 17,474.28