Finding the Fourth Proportional to 8,783.69, 13,180.67 and 3,240.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,783.69 : 13,180.67 = 3,240.89 : x
2. Step 2: Convert to fraction form
   8,783.69/13,180.67 = 3,240.89/x
3. Step 3: Cross multiply
   8,783.69x = 13,180.67 × 3,240.89
4. Step 4: Simplify right side
   8,783.69x = 42,717,043.80
5. Step 5: Solve for x
   x = 42,717,043.80/8,783.69
6. Step 6: Final answer
   x = 4,863.23