Finding the Fourth Proportional to 12,272.48, 18,410.40 and 3,949.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,272.48 : 18,410.40 = 3,949.76 : x
2. Step 2: Convert to fraction form
   12,272.48/18,410.40 = 3,949.76/x
3. Step 3: Cross multiply
   12,272.48x = 18,410.40 × 3,949.76
4. Step 4: Simplify right side
   12,272.48x = 72,716,661.50
5. Step 5: Solve for x
   x = 72,716,661.50/12,272.48
6. Step 6: Final answer
   x = 5,925.18