Finding the Fourth Proportional to 9,636.75, 13,298.81 and 5,445.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636.75 : 13,298.81 = 5,445.09 : x
2. Step 2: Convert to fraction form
   9,636.75/13,298.81 = 5,445.09/x
3. Step 3: Cross multiply
   9,636.75x = 13,298.81 × 5,445.09
4. Step 4: Simplify right side
   9,636.75x = 72,413,190.12
5. Step 5: Solve for x
   x = 72,413,190.12/9,636.75
6. Step 6: Final answer
   x = 7,514.28