Finding the Fourth Proportional to 21,622.25, 29,838.71 and 12,190.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,622.25 : 29,838.71 = 12,190.82 : x
2. Step 2: Convert to fraction form
   21,622.25/29,838.71 = 12,190.82/x
3. Step 3: Cross multiply
   21,622.25x = 29,838.71 × 12,190.82
4. Step 4: Simplify right side
   21,622.25x = 363,758,223.93
5. Step 5: Solve for x
   x = 363,758,223.93/21,622.25
6. Step 6: Final answer
   x = 16,823.33