Finding the Fourth Proportional to 5,436.36, 8,148.42 and 3,240.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.36 : 8,148.42 = 3,240.50 : x
2. Step 2: Convert to fraction form
   5,436.36/8,148.42 = 3,240.50/x
3. Step 3: Cross multiply
   5,436.36x = 8,148.42 × 3,240.50
4. Step 4: Simplify right side
   5,436.36x = 26,404,914.27
5. Step 5: Solve for x
   x = 26,404,914.27/5,436.36
6. Step 6: Final answer
   x = 4,857.09