Finding the Fourth Proportional to 9,615.94, 13,270.01 and 5,424.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,615.94 : 13,270.01 = 5,424.19 : x
2. Step 2: Convert to fraction form
   9,615.94/13,270.01 = 5,424.19/x
3. Step 3: Cross multiply
   9,615.94x = 13,270.01 × 5,424.19
4. Step 4: Simplify right side
   9,615.94x = 71,979,025.76
5. Step 5: Solve for x
   x = 71,979,025.76/9,615.94
6. Step 6: Final answer
   x = 7,485.39