Finding the Fourth Proportional to 9,619.56, 13,273.47 and 5,427

Step by Step Solution

1. Step 1: Write the proportion equation
   9,619.56 : 13,273.47 = 5,427 : x
2. Step 2: Convert to fraction form
   9,619.56/13,273.47 = 5,427/x
3. Step 3: Cross multiply
   9,619.56x = 13,273.47 × 5,427
4. Step 4: Simplify right side
   9,619.56x = 72,035,121.69
5. Step 5: Solve for x
   x = 72,035,121.69/9,619.56
6. Step 6: Final answer
   x = 7,488.40