Finding the Fourth Proportional to 12,268.72, 18,401.20 and 4,477.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,268.72 : 18,401.20 = 4,477.56 : x
2. Step 2: Convert to fraction form
   12,268.72/18,401.20 = 4,477.56/x
3. Step 3: Cross multiply
   12,268.72x = 18,401.20 × 4,477.56
4. Step 4: Simplify right side
   12,268.72x = 82,392,477.07
5. Step 5: Solve for x
   x = 82,392,477.07/12,268.72
6. Step 6: Final answer
   x = 6,715.65