Finding the Fourth Proportional to 12,030, 16,605.90 and 9,054.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,030 : 16,605.90 = 9,054.42 : x
2. Step 2: Convert to fraction form
   12,030/16,605.90 = 9,054.42/x
3. Step 3: Cross multiply
   12,030x = 16,605.90 × 9,054.42
4. Step 4: Simplify right side
   12,030x = 150,356,793.08
5. Step 5: Solve for x
   x = 150,356,793.08/12,030
6. Step 6: Final answer
   x = 12,498.49