Finding the Fourth Proportional to 10,785.89, 16,163.21 and 7,450.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.89 : 16,163.21 = 7,450.72 : x
2. Step 2: Convert to fraction form
   10,785.89/16,163.21 = 7,450.72/x
3. Step 3: Cross multiply
   10,785.89x = 16,163.21 × 7,450.72
4. Step 4: Simplify right side
   10,785.89x = 120,427,530.23
5. Step 5: Solve for x
   x = 120,427,530.23/10,785.89
6. Step 6: Final answer
   x = 11,165.28