Finding the Fourth Proportional to 7,111.09, 10,674.15 and 3,993.70

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.09 : 10,674.15 = 3,993.70 : x
2. Step 2: Convert to fraction form
   7,111.09/10,674.15 = 3,993.70/x
3. Step 3: Cross multiply
   7,111.09x = 10,674.15 × 3,993.70
4. Step 4: Simplify right side
   7,111.09x = 42,629,352.86
5. Step 5: Solve for x
   x = 42,629,352.86/7,111.09
6. Step 6: Final answer
   x = 5,994.77