Finding the Fourth Proportional to 16,142.75, 22,275.97 and 9,430.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,142.75 : 22,275.97 = 9,430.28 : x
2. Step 2: Convert to fraction form
   16,142.75/22,275.97 = 9,430.28/x
3. Step 3: Cross multiply
   16,142.75x = 22,275.97 × 9,430.28
4. Step 4: Simplify right side
   16,142.75x = 210,068,499.42
5. Step 5: Solve for x
   x = 210,068,499.42/16,142.75
6. Step 6: Final answer
   x = 13,013.18