Finding the Fourth Proportional to 16,947, 25,429.37 and 12,305.35

Step by Step Solution

1. Step 1: Write the proportion equation
   16,947 : 25,429.37 = 12,305.35 : x
2. Step 2: Convert to fraction form
   16,947/25,429.37 = 12,305.35/x
3. Step 3: Cross multiply
   16,947x = 25,429.37 × 12,305.35
4. Step 4: Simplify right side
   16,947x = 312,917,268.39
5. Step 5: Solve for x
   x = 312,917,268.39/16,947
6. Step 6: Final answer
   x = 18,464.46