Finding the Fourth Proportional to 11,012.67, 16,520.83 and 4,438.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,012.67 : 16,520.83 = 4,438.31 : x
2. Step 2: Convert to fraction form
   11,012.67/16,520.83 = 4,438.31/x
3. Step 3: Cross multiply
   11,012.67x = 16,520.83 × 4,438.31
4. Step 4: Simplify right side
   11,012.67x = 73,324,471.30
5. Step 5: Solve for x
   x = 73,324,471.30/11,012.67
6. Step 6: Final answer
   x = 6,658.19