Finding the Fourth Proportional to 5,279.38, 7,929.33 and 3,887.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,279.38 : 7,929.33 = 3,887.22 : x
2. Step 2: Convert to fraction form
   5,279.38/7,929.33 = 3,887.22/x
3. Step 3: Cross multiply
   5,279.38x = 7,929.33 × 3,887.22
4. Step 4: Simplify right side
   5,279.38x = 30,823,043.02
5. Step 5: Solve for x
   x = 30,823,043.02/5,279.38
6. Step 6: Final answer
   x = 5,838.38