Finding the Fourth Proportional to 12,119.42, 16,727.82 and 7,405.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,119.42 : 16,727.82 = 7,405.22 : x
2. Step 2: Convert to fraction form
   12,119.42/16,727.82 = 7,405.22/x
3. Step 3: Cross multiply
   12,119.42x = 16,727.82 × 7,405.22
4. Step 4: Simplify right side
   12,119.42x = 123,873,187.22
5. Step 5: Solve for x
   x = 123,873,187.22/12,119.42
6. Step 6: Final answer
   x = 10,221.05