Finding the Fourth Proportional to 16,142.55, 22,274.64 and 9,423.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,142.55 : 22,274.64 = 9,423.31 : x
2. Step 2: Convert to fraction form
   16,142.55/22,274.64 = 9,423.31/x
3. Step 3: Cross multiply
   16,142.55x = 22,274.64 × 9,423.31
4. Step 4: Simplify right side
   16,142.55x = 209,900,837.86
5. Step 5: Solve for x
   x = 209,900,837.86/16,142.55
6. Step 6: Final answer
   x = 13,002.96