Finding the Fourth Proportional to 5,436.34, 7,500.87 and 3,198.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.34 : 7,500.87 = 3,198.31 : x
2. Step 2: Convert to fraction form
   5,436.34/7,500.87 = 3,198.31/x
3. Step 3: Cross multiply
   5,436.34x = 7,500.87 × 3,198.31
4. Step 4: Simplify right side
   5,436.34x = 23,990,088.78
5. Step 5: Solve for x
   x = 23,990,088.78/5,436.34
6. Step 6: Final answer
   x = 4,412.91