Finding the Fourth Proportional to 11,776.62, 17,667.12 and 3,879.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,776.62 : 17,667.12 = 3,879.58 : x
2. Step 2: Convert to fraction form
   11,776.62/17,667.12 = 3,879.58/x
3. Step 3: Cross multiply
   11,776.62x = 17,667.12 × 3,879.58
4. Step 4: Simplify right side
   11,776.62x = 68,541,005.41
5. Step 5: Solve for x
   x = 68,541,005.41/11,776.62
6. Step 6: Final answer
   x = 5,820.09