Finding the Fourth Proportional to 9,016.20, 12,450.87 and 8,525.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,016.20 : 12,450.87 = 8,525.34 : x
2. Step 2: Convert to fraction form
   9,016.20/12,450.87 = 8,525.34/x
3. Step 3: Cross multiply
   9,016.20x = 12,450.87 × 8,525.34
4. Step 4: Simplify right side
   9,016.20x = 106,147,900.05
5. Step 5: Solve for x
   x = 106,147,900.05/9,016.20
6. Step 6: Final answer
   x = 11,773.02