Finding the Fourth Proportional to 9,615.38, 13,269.42 and 5,423.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,615.38 : 13,269.42 = 5,423.63 : x
2. Step 2: Convert to fraction form
   9,615.38/13,269.42 = 5,423.63/x
3. Step 3: Cross multiply
   9,615.38x = 13,269.42 × 5,423.63
4. Step 4: Simplify right side
   9,615.38x = 71,968,358.05
5. Step 5: Solve for x
   x = 71,968,358.05/9,615.38
6. Step 6: Final answer
   x = 7,484.72