Finding the Fourth Proportional to 9,535.96, 13,160.25 and 5,287.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,535.96 : 13,160.25 = 5,287.21 : x
2. Step 2: Convert to fraction form
   9,535.96/13,160.25 = 5,287.21/x
3. Step 3: Cross multiply
   9,535.96x = 13,160.25 × 5,287.21
4. Step 4: Simplify right side
   9,535.96x = 69,581,005.40
5. Step 5: Solve for x
   x = 69,581,005.40/9,535.96
6. Step 6: Final answer
   x = 7,296.70