Finding the Fourth Proportional to 7,072.85, 9,760.71 and 3,886.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.85 : 9,760.71 = 3,886.22 : x
2. Step 2: Convert to fraction form
   7,072.85/9,760.71 = 3,886.22/x
3. Step 3: Cross multiply
   7,072.85x = 9,760.71 × 3,886.22
4. Step 4: Simplify right side
   7,072.85x = 37,932,290.82
5. Step 5: Solve for x
   x = 37,932,290.82/7,072.85
6. Step 6: Final answer
   x = 5,363.08