Finding the Fourth Proportional to 16,199.82, 22,355.65 and 9,128.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,199.82 : 22,355.65 = 9,128.52 : x
2. Step 2: Convert to fraction form
   16,199.82/22,355.65 = 9,128.52/x
3. Step 3: Cross multiply
   16,199.82x = 22,355.65 × 9,128.52
4. Step 4: Simplify right side
   16,199.82x = 204,073,840.72
5. Step 5: Solve for x
   x = 204,073,840.72/16,199.82
6. Step 6: Final answer
   x = 12,597.29