Finding the Fourth Proportional to 12,449.72, 18,675.50 and 4,554.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,449.72 : 18,675.50 = 4,554.25 : x
2. Step 2: Convert to fraction form
   12,449.72/18,675.50 = 4,554.25/x
3. Step 3: Cross multiply
   12,449.72x = 18,675.50 × 4,554.25
4. Step 4: Simplify right side
   12,449.72x = 85,052,826.42
5. Step 5: Solve for x
   x = 85,052,826.42/12,449.72
6. Step 6: Final answer
   x = 6,831.70