Finding the Fourth Proportional to 9,647.89, 13,311.15 and 5,398.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,647.89 : 13,311.15 = 5,398.51 : x
2. Step 2: Convert to fraction form
   9,647.89/13,311.15 = 5,398.51/x
3. Step 3: Cross multiply
   9,647.89x = 13,311.15 × 5,398.51
4. Step 4: Simplify right side
   9,647.89x = 71,860,376.39
5. Step 5: Solve for x
   x = 71,860,376.39/9,647.89
6. Step 6: Final answer
   x = 7,448.30