Finding the Fourth Proportional to 7,456.37, 11,188.20 and 5,279.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,456.37 : 11,188.20 = 5,279.09 : x
2. Step 2: Convert to fraction form
   7,456.37/11,188.20 = 5,279.09/x
3. Step 3: Cross multiply
   7,456.37x = 11,188.20 × 5,279.09
4. Step 4: Simplify right side
   7,456.37x = 59,063,514.74
5. Step 5: Solve for x
   x = 59,063,514.74/7,456.37
6. Step 6: Final answer
   x = 7,921.22