Finding the Fourth Proportional to 16,185.28, 22,335.54 and 9,111.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,185.28 : 22,335.54 = 9,111.52 : x
2. Step 2: Convert to fraction form
   16,185.28/22,335.54 = 9,111.52/x
3. Step 3: Cross multiply
   16,185.28x = 22,335.54 × 9,111.52
4. Step 4: Simplify right side
   16,185.28x = 203,510,719.42
5. Step 5: Solve for x
   x = 203,510,719.42/16,185.28
6. Step 6: Final answer
   x = 12,573.82