Finding the Fourth Proportional to 9,642.75, 13,308.09 and 5,451.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,642.75 : 13,308.09 = 5,451.27 : x
2. Step 2: Convert to fraction form
   9,642.75/13,308.09 = 5,451.27/x
3. Step 3: Cross multiply
   9,642.75x = 13,308.09 × 5,451.27
4. Step 4: Simplify right side
   9,642.75x = 72,545,991.77
5. Step 5: Solve for x
   x = 72,545,991.77/9,642.75
6. Step 6: Final answer
   x = 7,523.37