Finding the Fourth Proportional to 9,020.74, 12,452.30 and 7,756.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,020.74 : 12,452.30 = 7,756.72 : x
2. Step 2: Convert to fraction form
   9,020.74/12,452.30 = 7,756.72/x
3. Step 3: Cross multiply
   9,020.74x = 12,452.30 × 7,756.72
4. Step 4: Simplify right side
   9,020.74x = 96,589,004.46
5. Step 5: Solve for x
   x = 96,589,004.46/9,020.74
6. Step 6: Final answer
   x = 10,707.44