Finding the Fourth Proportional to 8,381.50, 12,574.98 and 3,998.39

Step by Step Solution

1. Step 1: Write the proportion equation
   8,381.50 : 12,574.98 = 3,998.39 : x
2. Step 2: Convert to fraction form
   8,381.50/12,574.98 = 3,998.39/x
3. Step 3: Cross multiply
   8,381.50x = 12,574.98 × 3,998.39
4. Step 4: Simplify right side
   8,381.50x = 50,279,591.42
5. Step 5: Solve for x
   x = 50,279,591.42/8,381.50
6. Step 6: Final answer
   x = 5,998.88