Finding the Fourth Proportional to 11,761.08, 17,647.38 and 5,179.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,761.08 : 17,647.38 = 5,179.42 : x
2. Step 2: Convert to fraction form
   11,761.08/17,647.38 = 5,179.42/x
3. Step 3: Cross multiply
   11,761.08x = 17,647.38 × 5,179.42
4. Step 4: Simplify right side
   11,761.08x = 91,403,192.92
5. Step 5: Solve for x
   x = 91,403,192.92/11,761.08
6. Step 6: Final answer
   x = 7,771.67