Finding the Fourth Proportional to 5,279.37, 7,288.55 and 3,942.33

Step by Step Solution

1. Step 1: Write the proportion equation
   5,279.37 : 7,288.55 = 3,942.33 : x
2. Step 2: Convert to fraction form
   5,279.37/7,288.55 = 3,942.33/x
3. Step 3: Cross multiply
   5,279.37x = 7,288.55 × 3,942.33
4. Step 4: Simplify right side
   5,279.37x = 28,733,869.32
5. Step 5: Solve for x
   x = 28,733,869.32/5,279.37
6. Step 6: Final answer
   x = 5,442.67