Finding the Fourth Proportional to 12,085.38, 18,097.05 and 7,158.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,085.38 : 18,097.05 = 7,158.54 : x
2. Step 2: Convert to fraction form
   12,085.38/18,097.05 = 7,158.54/x
3. Step 3: Cross multiply
   12,085.38x = 18,097.05 × 7,158.54
4. Step 4: Simplify right side
   12,085.38x = 129,548,456.31
5. Step 5: Solve for x
   x = 129,548,456.31/12,085.38
6. Step 6: Final answer
   x = 10,719.44