Finding the Fourth Proportional to 9,874.38, 13,626.72 and 5,398.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,874.38 : 13,626.72 = 5,398.05 : x
2. Step 2: Convert to fraction form
   9,874.38/13,626.72 = 5,398.05/x
3. Step 3: Cross multiply
   9,874.38x = 13,626.72 × 5,398.05
4. Step 4: Simplify right side
   9,874.38x = 73,557,715.90
5. Step 5: Solve for x
   x = 73,557,715.90/9,874.38
6. Step 6: Final answer
   x = 7,449.35