Finding the Fourth Proportional to 16,200.82, 22,357.02 and 9,129.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,200.82 : 22,357.02 = 9,129.52 : x
2. Step 2: Convert to fraction form
   16,200.82/22,357.02 = 9,129.52/x
3. Step 3: Cross multiply
   16,200.82x = 22,357.02 × 9,129.52
4. Step 4: Simplify right side
   16,200.82x = 204,108,861.23
5. Step 5: Solve for x
   x = 204,108,861.23/16,200.82
6. Step 6: Final answer
   x = 12,598.67