Finding the Fourth Proportional to 9,618.32, 13,273.26 and 5,426.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,618.32 : 13,273.26 = 5,426.54 : x
2. Step 2: Convert to fraction form
   9,618.32/13,273.26 = 5,426.54/x
3. Step 3: Cross multiply
   9,618.32x = 13,273.26 × 5,426.54
4. Step 4: Simplify right side
   9,618.32x = 72,027,876.32
5. Step 5: Solve for x
   x = 72,027,876.32/9,618.32
6. Step 6: Final answer
   x = 7,488.61