Finding the Fourth Proportional to 21,930.52, 30,262.29 and 12,369.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,930.52 : 30,262.29 = 12,369.88 : x
2. Step 2: Convert to fraction form
   21,930.52/30,262.29 = 12,369.88/x
3. Step 3: Cross multiply
   21,930.52x = 30,262.29 × 12,369.88
4. Step 4: Simplify right side
   21,930.52x = 374,340,895.83
5. Step 5: Solve for x
   x = 374,340,895.83/21,930.52
6. Step 6: Final answer
   x = 17,069.40