Finding the Fourth Proportional to 11,956.72, 17,935.98 and 3,191.44

Step by Step Solution

1. Step 1: Write the proportion equation
   11,956.72 : 17,935.98 = 3,191.44 : x
2. Step 2: Convert to fraction form
   11,956.72/17,935.98 = 3,191.44/x
3. Step 3: Cross multiply
   11,956.72x = 17,935.98 × 3,191.44
4. Step 4: Simplify right side
   11,956.72x = 57,241,604.01
5. Step 5: Solve for x
   x = 57,241,604.01/11,956.72
6. Step 6: Final answer
   x = 4,787.40