Finding the Fourth Proportional to 16,942.05, 23,368.37 and 11,916.81

Step by Step Solution

1. Step 1: Write the proportion equation
   16,942.05 : 23,368.37 = 11,916.81 : x
2. Step 2: Convert to fraction form
   16,942.05/23,368.37 = 11,916.81/x
3. Step 3: Cross multiply
   16,942.05x = 23,368.37 × 11,916.81
4. Step 4: Simplify right side
   16,942.05x = 278,476,365.72
5. Step 5: Solve for x
   x = 278,476,365.72/16,942.05
6. Step 6: Final answer
   x = 16,436.99