Finding the Fourth Proportional to 9,020.79, 12,450.33 and 5,666.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.79 : 12,450.33 = 5,666.58 : x
2. Step 2: Convert to fraction form
   9,020.79/12,450.33 = 5,666.58/x
3. Step 3: Cross multiply
   9,020.79x = 12,450.33 × 5,666.58
4. Step 4: Simplify right side
   9,020.79x = 70,550,790.97
5. Step 5: Solve for x
   x = 70,550,790.97/9,020.79
6. Step 6: Final answer
   x = 7,820.91