Finding the Fourth Proportional to 3,618.33, 5,438.61 and 3,137.19

Step by Step Solution

1. Step 1: Write the proportion equation
   3,618.33 : 5,438.61 = 3,137.19 : x
2. Step 2: Convert to fraction form
   3,618.33/5,438.61 = 3,137.19/x
3. Step 3: Cross multiply
   3,618.33x = 5,438.61 × 3,137.19
4. Step 4: Simplify right side
   3,618.33x = 17,061,952.91
5. Step 5: Solve for x
   x = 17,061,952.91/3,618.33
6. Step 6: Final answer
   x = 4,715.42