Finding the Fourth Proportional to 16,002.69, 22,087.67 and 9,720.33

Step by Step Solution

1. Step 1: Write the proportion equation
   16,002.69 : 22,087.67 = 9,720.33 : x
2. Step 2: Convert to fraction form
   16,002.69/22,087.67 = 9,720.33/x
3. Step 3: Cross multiply
   16,002.69x = 22,087.67 × 9,720.33
4. Step 4: Simplify right side
   16,002.69x = 214,699,392.73
5. Step 5: Solve for x
   x = 214,699,392.73/16,002.69
6. Step 6: Final answer
   x = 13,416.46