Finding the Fourth Proportional to 14,456.54, 19,950.18 and 8,488.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,456.54 : 19,950.18 = 8,488.28 : x
2. Step 2: Convert to fraction form
   14,456.54/19,950.18 = 8,488.28/x
3. Step 3: Cross multiply
   14,456.54x = 19,950.18 × 8,488.28
4. Step 4: Simplify right side
   14,456.54x = 169,342,713.89
5. Step 5: Solve for x
   x = 169,342,713.89/14,456.54
6. Step 6: Final answer
   x = 11,713.92