Finding the Fourth Proportional to 7,112.72, 10,672.22 and 3,821.96

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.72 : 10,672.22 = 3,821.96 : x
2. Step 2: Convert to fraction form
   7,112.72/10,672.22 = 3,821.96/x
3. Step 3: Cross multiply
   7,112.72x = 10,672.22 × 3,821.96
4. Step 4: Simplify right side
   7,112.72x = 40,788,797.95
5. Step 5: Solve for x
   x = 40,788,797.95/7,112.72
6. Step 6: Final answer
   x = 5,734.63