Finding the Fourth Proportional to 11,919.69, 17,879.67 and 3,154.53

Step by Step Solution

1. Step 1: Write the proportion equation
   11,919.69 : 17,879.67 = 3,154.53 : x
2. Step 2: Convert to fraction form
   11,919.69/17,879.67 = 3,154.53/x
3. Step 3: Cross multiply
   11,919.69x = 17,879.67 × 3,154.53
4. Step 4: Simplify right side
   11,919.69x = 56,401,955.41
5. Step 5: Solve for x
   x = 56,401,955.41/11,919.69
6. Step 6: Final answer
   x = 4,731.83