Finding the Fourth Proportional to 9,645.59, 13,311.56 and 5,397.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,645.59 : 13,311.56 = 5,397.03 : x
2. Step 2: Convert to fraction form
   9,645.59/13,311.56 = 5,397.03/x
3. Step 3: Cross multiply
   9,645.59x = 13,311.56 × 5,397.03
4. Step 4: Simplify right side
   9,645.59x = 71,842,902.16
5. Step 5: Solve for x
   x = 71,842,902.16/9,645.59
6. Step 6: Final answer
   x = 7,448.26