Finding the Fourth Proportional to 16,128.55, 24,192.59 and 7,809.29

Step by Step Solution

1. Step 1: Write the proportion equation
   16,128.55 : 24,192.59 = 7,809.29 : x
2. Step 2: Convert to fraction form
   16,128.55/24,192.59 = 7,809.29/x
3. Step 3: Cross multiply
   16,128.55x = 24,192.59 × 7,809.29
4. Step 4: Simplify right side
   16,128.55x = 188,926,912.11
5. Step 5: Solve for x
   x = 188,926,912.11/16,128.55
6. Step 6: Final answer
   x = 11,713.82