Finding the Fourth Proportional to 9,479.68, 13,081.98 and 5,288.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,479.68 : 13,081.98 = 5,288.20 : x
2. Step 2: Convert to fraction form
   9,479.68/13,081.98 = 5,288.20/x
3. Step 3: Cross multiply
   9,479.68x = 13,081.98 × 5,288.20
4. Step 4: Simplify right side
   9,479.68x = 69,180,126.64
5. Step 5: Solve for x
   x = 69,180,126.64/9,479.68
6. Step 6: Final answer
   x = 7,297.73