Finding the Fourth Proportional to 16,947.78, 23,369.63 and 14,258.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,947.78 : 23,369.63 = 14,258.31 : x
2. Step 2: Convert to fraction form
   16,947.78/23,369.63 = 14,258.31/x
3. Step 3: Cross multiply
   16,947.78x = 23,369.63 × 14,258.31
4. Step 4: Simplify right side
   16,947.78x = 333,211,357.83
5. Step 5: Solve for x
   x = 333,211,357.83/16,947.78
6. Step 6: Final answer
   x = 19,661.06