Finding the Fourth Proportional to 9,618.57, 13,273.61 and 5,426.79

Step by Step Solution

1. Step 1: Write the proportion equation
   9,618.57 : 13,273.61 = 5,426.79 : x
2. Step 2: Convert to fraction form
   9,618.57/13,273.61 = 5,426.79/x
3. Step 3: Cross multiply
   9,618.57x = 13,273.61 × 5,426.79
4. Step 4: Simplify right side
   9,618.57x = 72,033,066.88
5. Step 5: Solve for x
   x = 72,033,066.88/9,618.57
6. Step 6: Final answer
   x = 7,488.96