Finding the Fourth Proportional to 22,064.25, 30,448.71 and 12,128.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,064.25 : 30,448.71 = 12,128.25 : x
2. Step 2: Convert to fraction form
   22,064.25/30,448.71 = 12,128.25/x
3. Step 3: Cross multiply
   22,064.25x = 30,448.71 × 12,128.25
4. Step 4: Simplify right side
   22,064.25x = 369,289,567.06
5. Step 5: Solve for x
   x = 369,289,567.06/22,064.25
6. Step 6: Final answer
   x = 16,737.01