Finding the Fourth Proportional to 14,456.76, 19,942.95 and 9,429.39

Step by Step Solution

1. Step 1: Write the proportion equation
   14,456.76 : 19,942.95 = 9,429.39 : x
2. Step 2: Convert to fraction form
   14,456.76/19,942.95 = 9,429.39/x
3. Step 3: Cross multiply
   14,456.76x = 19,942.95 × 9,429.39
4. Step 4: Simplify right side
   14,456.76x = 188,049,853.30
5. Step 5: Solve for x
   x = 188,049,853.30/14,456.76
6. Step 6: Final answer
   x = 13,007.75