Finding the Fourth Proportional to 12,082.37, 18,092.57 and 7,155.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,082.37 : 18,092.57 = 7,155.54 : x
2. Step 2: Convert to fraction form
   12,082.37/18,092.57 = 7,155.54/x
3. Step 3: Cross multiply
   12,082.37x = 18,092.57 × 7,155.54
4. Step 4: Simplify right side
   12,082.37x = 129,462,072.56
5. Step 5: Solve for x
   x = 129,462,072.56/12,082.37
6. Step 6: Final answer
   x = 10,714.96