Finding the Fourth Proportional to 16,154.69, 22,290.20 and 9,439.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,154.69 : 22,290.20 = 9,439.02 : x
2. Step 2: Convert to fraction form
   16,154.69/22,290.20 = 9,439.02/x
3. Step 3: Cross multiply
   16,154.69x = 22,290.20 × 9,439.02
4. Step 4: Simplify right side
   16,154.69x = 210,397,643.60
5. Step 5: Solve for x
   x = 210,397,643.60/16,154.69
6. Step 6: Final answer
   x = 13,023.94