Finding the Fourth Proportional to 9,411.59, 12,988.12 and 5,163.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,411.59 : 12,988.12 = 5,163.03 : x
2. Step 2: Convert to fraction form
   9,411.59/12,988.12 = 5,163.03/x
3. Step 3: Cross multiply
   9,411.59x = 12,988.12 × 5,163.03
4. Step 4: Simplify right side
   9,411.59x = 67,058,040.30
5. Step 5: Solve for x
   x = 67,058,040.30/9,411.59
6. Step 6: Final answer
   x = 7,125.05