Finding the Fourth Proportional to 21,922.69, 30,245.91 and 12,484.57

Step by Step Solution

1. Step 1: Write the proportion equation
   21,922.69 : 30,245.91 = 12,484.57 : x
2. Step 2: Convert to fraction form
   21,922.69/30,245.91 = 12,484.57/x
3. Step 3: Cross multiply
   21,922.69x = 30,245.91 × 12,484.57
4. Step 4: Simplify right side
   21,922.69x = 377,607,180.61
5. Step 5: Solve for x
   x = 377,607,180.61/21,922.69
6. Step 6: Final answer
   x = 17,224.49