Finding the Fourth Proportional to 9,478.38, 13,079.52 and 5,229.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.38 : 13,079.52 = 5,229.18 : x
2. Step 2: Convert to fraction form
   9,478.38/13,079.52 = 5,229.18/x
3. Step 3: Cross multiply
   9,478.38x = 13,079.52 × 5,229.18
4. Step 4: Simplify right side
   9,478.38x = 68,395,164.39
5. Step 5: Solve for x
   x = 68,395,164.39/9,478.38
6. Step 6: Final answer
   x = 7,215.91