Finding the Fourth Proportional to 21,922.88, 30,251.72 and 12,365.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,922.88 : 30,251.72 = 12,365.12 : x
2. Step 2: Convert to fraction form
   21,922.88/30,251.72 = 12,365.12/x
3. Step 3: Cross multiply
   21,922.88x = 30,251.72 × 12,365.12
4. Step 4: Simplify right side
   21,922.88x = 374,066,148.01
5. Step 5: Solve for x
   x = 374,066,148.01/21,922.88
6. Step 6: Final answer
   x = 17,062.82