Finding the Fourth Proportional to 12,015.50, 18,018.23 and 5,774.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,015.50 : 18,018.23 = 5,774.04 : x
2. Step 2: Convert to fraction form
   12,015.50/18,018.23 = 5,774.04/x
3. Step 3: Cross multiply
   12,015.50x = 18,018.23 × 5,774.04
4. Step 4: Simplify right side
   12,015.50x = 104,037,951.88
5. Step 5: Solve for x
   x = 104,037,951.88/12,015.50
6. Step 6: Final answer
   x = 8,658.65