Finding the Fourth Proportional to 16,143.98, 22,281.28 and 9,429.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,143.98 : 22,281.28 = 9,429.55 : x
2. Step 2: Convert to fraction form
   16,143.98/22,281.28 = 9,429.55/x
3. Step 3: Cross multiply
   16,143.98x = 22,281.28 × 9,429.55
4. Step 4: Simplify right side
   16,143.98x = 210,102,364.55
5. Step 5: Solve for x
   x = 210,102,364.55/16,143.98
6. Step 6: Final answer
   x = 13,014.29