Finding the Fourth Proportional to 16,065.68, 24,208.20 and 13,208.00

Step by Step Solution

1. Step 1: Write the proportion equation
   16,065.68 : 24,208.20 = 13,208.00 : x
2. Step 2: Convert to fraction form
   16,065.68/24,208.20 = 13,208.00/x
3. Step 3: Cross multiply
   16,065.68x = 24,208.20 × 13,208.00
4. Step 4: Simplify right side
   16,065.68x = 319,741,784.56
5. Step 5: Solve for x
   x = 319,741,784.56/16,065.68
6. Step 6: Final answer
   x = 19,902.17