Finding the Fourth Proportional to 16,142.90, 22,277.63 and 9,069.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,142.90 : 22,277.63 = 9,069.98 : x
2. Step 2: Convert to fraction form
   16,142.90/22,277.63 = 9,069.98/x
3. Step 3: Cross multiply
   16,142.90x = 22,277.63 × 9,069.98
4. Step 4: Simplify right side
   16,142.90x = 202,057,569.83
5. Step 5: Solve for x
   x = 202,057,569.83/16,142.90
6. Step 6: Final answer
   x = 12,516.81