Finding the Fourth Proportional to 7,178.82, 10,764.09 and 2,791.15

Step by Step Solution

1. Step 1: Write the proportion equation
   7,178.82 : 10,764.09 = 2,791.15 : x
2. Step 2: Convert to fraction form
   7,178.82/10,764.09 = 2,791.15/x
3. Step 3: Cross multiply
   7,178.82x = 10,764.09 × 2,791.15
4. Step 4: Simplify right side
   7,178.82x = 30,044,189.80
5. Step 5: Solve for x
   x = 30,044,189.80/7,178.82
6. Step 6: Final answer
   x = 4,185.12