Finding the Fourth Proportional to 12,336.72, 17,007.60 and 8,351.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,336.72 : 17,007.60 = 8,351.52 : x
2. Step 2: Convert to fraction form
   12,336.72/17,007.60 = 8,351.52/x
3. Step 3: Cross multiply
   12,336.72x = 17,007.60 × 8,351.52
4. Step 4: Simplify right side
   12,336.72x = 142,039,311.55
5. Step 5: Solve for x
   x = 142,039,311.55/12,336.72
6. Step 6: Final answer
   x = 11,513.54