Finding the Fourth Proportional to 14,307.96, 19,724.82 and 12,339.48

Step by Step Solution

1. Step 1: Write the proportion equation
   14,307.96 : 19,724.82 = 12,339.48 : x
2. Step 2: Convert to fraction form
   14,307.96/19,724.82 = 12,339.48/x
3. Step 3: Cross multiply
   14,307.96x = 19,724.82 × 12,339.48
4. Step 4: Simplify right side
   14,307.96x = 243,394,021.89
5. Step 5: Solve for x
   x = 243,394,021.89/14,307.96
6. Step 6: Final answer
   x = 17,011.09