Finding the Fourth Proportional to 5,105.50, 7,659.79 and 1,818.17

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.50 : 7,659.79 = 1,818.17 : x
2. Step 2: Convert to fraction form
   5,105.50/7,659.79 = 1,818.17/x
3. Step 3: Cross multiply
   5,105.50x = 7,659.79 × 1,818.17
4. Step 4: Simplify right side
   5,105.50x = 13,926,796.49
5. Step 5: Solve for x
   x = 13,926,796.49/5,105.50
6. Step 6: Final answer
   x = 2,727.80