Finding the Fourth Proportional to 5,279.89, 7,922.54 and 3,526.09

Step by Step Solution

1. Step 1: Write the proportion equation
   5,279.89 : 7,922.54 = 3,526.09 : x
2. Step 2: Convert to fraction form
   5,279.89/7,922.54 = 3,526.09/x
3. Step 3: Cross multiply
   5,279.89x = 7,922.54 × 3,526.09
4. Step 4: Simplify right side
   5,279.89x = 27,935,571.44
5. Step 5: Solve for x
   x = 27,935,571.44/5,279.89
6. Step 6: Final answer
   x = 5,290.94