Finding the Fourth Proportional to 9,864.82, 13,613.40 and 5,388.52

Step by Step Solution

1. Step 1: Write the proportion equation
   9,864.82 : 13,613.40 = 5,388.52 : x
2. Step 2: Convert to fraction form
   9,864.82/13,613.40 = 5,388.52/x
3. Step 3: Cross multiply
   9,864.82x = 13,613.40 × 5,388.52
4. Step 4: Simplify right side
   9,864.82x = 73,356,078.17
5. Step 5: Solve for x
   x = 73,356,078.17/9,864.82
6. Step 6: Final answer
   x = 7,436.13