Finding the Fourth Proportional to 8,199.50, 12,300.81 and 3,518.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,199.50 : 12,300.81 = 3,518.84 : x
2. Step 2: Convert to fraction form
   8,199.50/12,300.81 = 3,518.84/x
3. Step 3: Cross multiply
   8,199.50x = 12,300.81 × 3,518.84
4. Step 4: Simplify right side
   8,199.50x = 43,284,520.76
5. Step 5: Solve for x
   x = 43,284,520.76/8,199.50
6. Step 6: Final answer
   x = 5,278.93