Finding the Fourth Proportional to 17,646.72, 26,446.71 and 12,944.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,646.72 : 26,446.71 = 12,944.72 : x
2. Step 2: Convert to fraction form
   17,646.72/26,446.71 = 12,944.72/x
3. Step 3: Cross multiply
   17,646.72x = 26,446.71 × 12,944.72
4. Step 4: Simplify right side
   17,646.72x = 342,345,123.64
5. Step 5: Solve for x
   x = 342,345,123.64/17,646.72
6. Step 6: Final answer
   x = 19,399.93