Finding the Fourth Proportional to 9,311.41, 13,969.55 and 3,072.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.41 : 13,969.55 = 3,072.37 : x
2. Step 2: Convert to fraction form
   9,311.41/13,969.55 = 3,072.37/x
3. Step 3: Cross multiply
   9,311.41x = 13,969.55 × 3,072.37
4. Step 4: Simplify right side
   9,311.41x = 42,919,626.33
5. Step 5: Solve for x
   x = 42,919,626.33/9,311.41
6. Step 6: Final answer
   x = 4,609.36