Finding the Fourth Proportional to 12,119.36, 16,737.12 and 7,406.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,119.36 : 16,737.12 = 7,406.72 : x
2. Step 2: Convert to fraction form
   12,119.36/16,737.12 = 7,406.72/x
3. Step 3: Cross multiply
   12,119.36x = 16,737.12 × 7,406.72
4. Step 4: Simplify right side
   12,119.36x = 123,967,161.45
5. Step 5: Solve for x
   x = 123,967,161.45/12,119.36
6. Step 6: Final answer
   x = 10,228.85