Finding the Fourth Proportional to 9,642.08, 13,306.72 and 5,393.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,642.08 : 13,306.72 = 5,393.54 : x
2. Step 2: Convert to fraction form
   9,642.08/13,306.72 = 5,393.54/x
3. Step 3: Cross multiply
   9,642.08x = 13,306.72 × 5,393.54
4. Step 4: Simplify right side
   9,642.08x = 71,770,326.59
5. Step 5: Solve for x
   x = 71,770,326.59/9,642.08
6. Step 6: Final answer
   x = 7,443.45