Finding the Fourth Proportional to 16,905.09, 23,314.82 and 12,666.09

Step by Step Solution

1. Step 1: Write the proportion equation
   16,905.09 : 23,314.82 = 12,666.09 : x
2. Step 2: Convert to fraction form
   16,905.09/23,314.82 = 12,666.09/x
3. Step 3: Cross multiply
   16,905.09x = 23,314.82 × 12,666.09
4. Step 4: Simplify right side
   16,905.09x = 295,307,545.12
5. Step 5: Solve for x
   x = 295,307,545.12/16,905.09
6. Step 6: Final answer
   x = 17,468.56