Finding the Fourth Proportional to 11,939.67, 17,909.49 and 3,174.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,939.67 : 17,909.49 = 3,174.59 : x
2. Step 2: Convert to fraction form
   11,939.67/17,909.49 = 3,174.59/x
3. Step 3: Cross multiply
   11,939.67x = 17,909.49 × 3,174.59
4. Step 4: Simplify right side
   11,939.67x = 56,855,287.86
5. Step 5: Solve for x
   x = 56,855,287.86/11,939.67
6. Step 6: Final answer
   x = 4,761.88