Finding the Fourth Proportional to 16,416.72, 22,650.57 and 9,699.39

Step by Step Solution

1. Step 1: Write the proportion equation
   16,416.72 : 22,650.57 = 9,699.39 : x
2. Step 2: Convert to fraction form
   16,416.72/22,650.57 = 9,699.39/x
3. Step 3: Cross multiply
   16,416.72x = 22,650.57 × 9,699.39
4. Step 4: Simplify right side
   16,416.72x = 219,696,712.15
5. Step 5: Solve for x
   x = 219,696,712.15/16,416.72
6. Step 6: Final answer
   x = 13,382.50