Finding the Fourth Proportional to 9,618.48, 13,273.24 and 5,427.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,618.48 : 13,273.24 = 5,427.12 : x
2. Step 2: Convert to fraction form
   9,618.48/13,273.24 = 5,427.12/x
3. Step 3: Cross multiply
   9,618.48x = 13,273.24 × 5,427.12
4. Step 4: Simplify right side
   9,618.48x = 72,035,466.27
5. Step 5: Solve for x
   x = 72,035,466.27/9,618.48
6. Step 6: Final answer
   x = 7,489.28