Finding the Fourth Proportional to 7,111.89, 10,662.72 and 3,361.59

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.89 : 10,662.72 = 3,361.59 : x
2. Step 2: Convert to fraction form
   7,111.89/10,662.72 = 3,361.59/x
3. Step 3: Cross multiply
   7,111.89x = 10,662.72 × 3,361.59
4. Step 4: Simplify right side
   7,111.89x = 35,843,692.92
5. Step 5: Solve for x
   x = 35,843,692.92/7,111.89
6. Step 6: Final answer
   x = 5,039.97