Finding the Fourth Proportional to 8,531.69, 12,798.60 and 3,336.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,531.69 : 12,798.60 = 3,336.89 : x
2. Step 2: Convert to fraction form
   8,531.69/12,798.60 = 3,336.89/x
3. Step 3: Cross multiply
   8,531.69x = 12,798.60 × 3,336.89
4. Step 4: Simplify right side
   8,531.69x = 42,707,456.36
5. Step 5: Solve for x
   x = 42,707,456.36/8,531.69
6. Step 6: Final answer
   x = 5,005.75