Finding the Fourth Proportional to 7,303.50, 10,078.83 and 3,991.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,303.50 : 10,078.83 = 3,991.50 : x
2. Step 2: Convert to fraction form
   7,303.50/10,078.83 = 3,991.50/x
3. Step 3: Cross multiply
   7,303.50x = 10,078.83 × 3,991.50
4. Step 4: Simplify right side
   7,303.50x = 40,229,649.95
5. Step 5: Solve for x
   x = 40,229,649.95/7,303.50
6. Step 6: Final answer
   x = 5,508.27