Finding the Fourth Proportional to 6,319.26, 8,721.39 and 3,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,319.26 : 8,721.39 = 3,667.50 : x
2. Step 2: Convert to fraction form
   6,319.26/8,721.39 = 3,667.50/x
3. Step 3: Cross multiply
   6,319.26x = 8,721.39 × 3,667.50
4. Step 4: Simplify right side
   6,319.26x = 31,985,697.83
5. Step 5: Solve for x
   x = 31,985,697.83/6,319.26
6. Step 6: Final answer
   x = 5,061.62