Finding the Fourth Proportional to 5,375.72, 8,017.63 and 4,721.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,375.72 : 8,017.63 = 4,721.91 : x
2. Step 2: Convert to fraction form
   5,375.72/8,017.63 = 4,721.91/x
3. Step 3: Cross multiply
   5,375.72x = 8,017.63 × 4,721.91
4. Step 4: Simplify right side
   5,375.72x = 37,858,527.27
5. Step 5: Solve for x
   x = 37,858,527.27/5,375.72
6. Step 6: Final answer
   x = 7,042.50