Finding the Fourth Proportional to 16,809.41, 23,196.79 and 9,255.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,809.41 : 23,196.79 = 9,255.58 : x
2. Step 2: Convert to fraction form
   16,809.41/23,196.79 = 9,255.58/x
3. Step 3: Cross multiply
   16,809.41x = 23,196.79 × 9,255.58
4. Step 4: Simplify right side
   16,809.41x = 214,699,699.31
5. Step 5: Solve for x
   x = 214,699,699.31/16,809.41
6. Step 6: Final answer
   x = 12,772.59