Finding the Fourth Proportional to 9,630.15, 13,288.96 and 5,438.13

Step by Step Solution

1. Step 1: Write the proportion equation
   9,630.15 : 13,288.96 = 5,438.13 : x
2. Step 2: Convert to fraction form
   9,630.15/13,288.96 = 5,438.13/x
3. Step 3: Cross multiply
   9,630.15x = 13,288.96 × 5,438.13
4. Step 4: Simplify right side
   9,630.15x = 72,267,092.04
5. Step 5: Solve for x
   x = 72,267,092.04/9,630.15
6. Step 6: Final answer
   x = 7,504.25