Finding the Fourth Proportional to 9,874.72, 13,627.44 and 5,398.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,874.72 : 13,627.44 = 5,398.38 : x
2. Step 2: Convert to fraction form
   9,874.72/13,627.44 = 5,398.38/x
3. Step 3: Cross multiply
   9,874.72x = 13,627.44 × 5,398.38
4. Step 4: Simplify right side
   9,874.72x = 73,566,099.55
5. Step 5: Solve for x
   x = 73,566,099.55/9,874.72
6. Step 6: Final answer
   x = 7,449.94