Finding the Fourth Proportional to 11,911, 17,874.69 and 4,119.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,911 : 17,874.69 = 4,119.82 : x
2. Step 2: Convert to fraction form
   11,911/17,874.69 = 4,119.82/x
3. Step 3: Cross multiply
   11,911x = 17,874.69 × 4,119.82
4. Step 4: Simplify right side
   11,911x = 73,640,505.36
5. Step 5: Solve for x
   x = 73,640,505.36/11,911
6. Step 6: Final answer
   x = 6,182.56