Finding the Fourth Proportional to 12,253.52, 18,369.88 and 4,863.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,253.52 : 18,369.88 = 4,863.20 : x
2. Step 2: Convert to fraction form
   12,253.52/18,369.88 = 4,863.20/x
3. Step 3: Cross multiply
   12,253.52x = 18,369.88 × 4,863.20
4. Step 4: Simplify right side
   12,253.52x = 89,336,400.42
5. Step 5: Solve for x
   x = 89,336,400.42/12,253.52
6. Step 6: Final answer
   x = 7,290.67