Finding the Fourth Proportional to 5,436.46, 8,119.61 and 5,398.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.46 : 8,119.61 = 5,398.38 : x
2. Step 2: Convert to fraction form
   5,436.46/8,119.61 = 5,398.38/x
3. Step 3: Cross multiply
   5,436.46x = 8,119.61 × 5,398.38
4. Step 4: Simplify right side
   5,436.46x = 43,832,740.23
5. Step 5: Solve for x
   x = 43,832,740.23/5,436.46
6. Step 6: Final answer
   x = 8,062.74