Finding the Fourth Proportional to 12,271.20, 18,395.69 and 4,474.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,271.20 : 18,395.69 = 4,474.50 : x
2. Step 2: Convert to fraction form
   12,271.20/18,395.69 = 4,474.50/x
3. Step 3: Cross multiply
   12,271.20x = 18,395.69 × 4,474.50
4. Step 4: Simplify right side
   12,271.20x = 82,311,492.53
5. Step 5: Solve for x
   x = 82,311,492.53/12,271.20
6. Step 6: Final answer
   x = 6,707.70