Finding the Fourth Proportional to 8,104.50, 12,157.50 and 3,721.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,104.50 : 12,157.50 = 3,721.32 : x
2. Step 2: Convert to fraction form
   8,104.50/12,157.50 = 3,721.32/x
3. Step 3: Cross multiply
   8,104.50x = 12,157.50 × 3,721.32
4. Step 4: Simplify right side
   8,104.50x = 45,241,947.90
5. Step 5: Solve for x
   x = 45,241,947.90/8,104.50
6. Step 6: Final answer
   x = 5,582.32