Finding the Fourth Proportional to 16,221.31, 22,384.92 and 9,051.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,221.31 : 22,384.92 = 9,051.42 : x
2. Step 2: Convert to fraction form
   16,221.31/22,384.92 = 9,051.42/x
3. Step 3: Cross multiply
   16,221.31x = 22,384.92 × 9,051.42
4. Step 4: Simplify right side
   16,221.31x = 202,615,312.59
5. Step 5: Solve for x
   x = 202,615,312.59/16,221.31
6. Step 6: Final answer
   x = 12,490.69