Finding the Fourth Proportional to 9,630.89, 13,289.67 and 5,381.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630.89 : 13,289.67 = 5,381.60 : x
2. Step 2: Convert to fraction form
   9,630.89/13,289.67 = 5,381.60/x
3. Step 3: Cross multiply
   9,630.89x = 13,289.67 × 5,381.60
4. Step 4: Simplify right side
   9,630.89x = 71,519,721.30
5. Step 5: Solve for x
   x = 71,519,721.30/9,630.89
6. Step 6: Final answer
   x = 7,426.08