Finding the Fourth Proportional to 12,015.49, 18,018.67 and 5,773.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,015.49 : 18,018.67 = 5,773.73 : x
2. Step 2: Convert to fraction form
   12,015.49/18,018.67 = 5,773.73/x
3. Step 3: Cross multiply
   12,015.49x = 18,018.67 × 5,773.73
4. Step 4: Simplify right side
   12,015.49x = 104,034,935.54
5. Step 5: Solve for x
   x = 104,034,935.54/12,015.49
6. Step 6: Final answer
   x = 8,658.40