Finding the Fourth Proportional to 5,279.88, 7,923.69 and 3,896.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,279.88 : 7,923.69 = 3,896.94 : x
2. Step 2: Convert to fraction form
   5,279.88/7,923.69 = 3,896.94/x
3. Step 3: Cross multiply
   5,279.88x = 7,923.69 × 3,896.94
4. Step 4: Simplify right side
   5,279.88x = 30,878,174.22
5. Step 5: Solve for x
   x = 30,878,174.22/5,279.88
6. Step 6: Final answer
   x = 5,848.27