Finding the Fourth Proportional to 9,479.38, 13,081.54 and 5,287.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,479.38 : 13,081.54 = 5,287.62 : x
2. Step 2: Convert to fraction form
   9,479.38/13,081.54 = 5,287.62/x
3. Step 3: Cross multiply
   9,479.38x = 13,081.54 × 5,287.62
4. Step 4: Simplify right side
   9,479.38x = 69,170,212.53
5. Step 5: Solve for x
   x = 69,170,212.53/9,479.38
6. Step 6: Final answer
   x = 7,296.91