Finding the Fourth Proportional to 9,636.80, 13,298.72 and 5,445.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,636.80 : 13,298.72 = 5,445.04 : x
2. Step 2: Convert to fraction form
   9,636.80/13,298.72 = 5,445.04/x
3. Step 3: Cross multiply
   9,636.80x = 13,298.72 × 5,445.04
4. Step 4: Simplify right side
   9,636.80x = 72,412,062.35
5. Step 5: Solve for x
   x = 72,412,062.35/9,636.80
6. Step 6: Final answer
   x = 7,514.12