Finding the Fourth Proportional to 7,841.55, 11,766.42 and 3,162.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,841.55 : 11,766.42 = 3,162.72 : x
2. Step 2: Convert to fraction form
   7,841.55/11,766.42 = 3,162.72/x
3. Step 3: Cross multiply
   7,841.55x = 11,766.42 × 3,162.72
4. Step 4: Simplify right side
   7,841.55x = 37,213,891.86
5. Step 5: Solve for x
   x = 37,213,891.86/7,841.55
6. Step 6: Final answer
   x = 4,745.73