Finding the Fourth Proportional to 9,642.72, 13,306.92 and 5,450.97

Step by Step Solution

1. Step 1: Write the proportion equation
   9,642.72 : 13,306.92 = 5,450.97 : x
2. Step 2: Convert to fraction form
   9,642.72/13,306.92 = 5,450.97/x
3. Step 3: Cross multiply
   9,642.72x = 13,306.92 × 5,450.97
4. Step 4: Simplify right side
   9,642.72x = 72,535,621.71
5. Step 5: Solve for x
   x = 72,535,621.71/9,642.72
6. Step 6: Final answer
   x = 7,522.32