Finding the Fourth Proportional to 7,085.18, 10,628.04 and 3,618.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085.18 : 10,628.04 = 3,618.38 : x
2. Step 2: Convert to fraction form
   7,085.18/10,628.04 = 3,618.38/x
3. Step 3: Cross multiply
   7,085.18x = 10,628.04 × 3,618.38
4. Step 4: Simplify right side
   7,085.18x = 38,456,287.38
5. Step 5: Solve for x
   x = 38,456,287.38/7,085.18
6. Step 6: Final answer
   x = 5,427.71