Finding the Fourth Proportional to 9,874.47, 13,626.72 and 5,398.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,874.47 : 13,626.72 = 5,398.29 : x
2. Step 2: Convert to fraction form
   9,874.47/13,626.72 = 5,398.29/x
3. Step 3: Cross multiply
   9,874.47x = 13,626.72 × 5,398.29
4. Step 4: Simplify right side
   9,874.47x = 73,560,986.31
5. Step 5: Solve for x
   x = 73,560,986.31/9,874.47
6. Step 6: Final answer
   x = 7,449.61