Finding the Fourth Proportional to 11,379.94, 17,072.79 and 3,171.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,379.94 : 17,072.79 = 3,171.94 : x
2. Step 2: Convert to fraction form
   11,379.94/17,072.79 = 3,171.94/x
3. Step 3: Cross multiply
   11,379.94x = 17,072.79 × 3,171.94
4. Step 4: Simplify right side
   11,379.94x = 54,153,822.83
5. Step 5: Solve for x
   x = 54,153,822.83/11,379.94
6. Step 6: Final answer
   x = 4,758.71