Finding the Fourth Proportional to 9,616.89, 13,271.31 and 5,425.14

Step by Step Solution

1. Step 1: Write the proportion equation
   9,616.89 : 13,271.31 = 5,425.14 : x
2. Step 2: Convert to fraction form
   9,616.89/13,271.31 = 5,425.14/x
3. Step 3: Cross multiply
   9,616.89x = 13,271.31 × 5,425.14
4. Step 4: Simplify right side
   9,616.89x = 71,998,714.73
5. Step 5: Solve for x
   x = 71,998,714.73/9,616.89
6. Step 6: Final answer
   x = 7,486.69