Finding the Fourth Proportional to 5,105.63, 7,657.50 and 1,818.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.63 : 7,657.50 = 1,818.83 : x
2. Step 2: Convert to fraction form
   5,105.63/7,657.50 = 1,818.83/x
3. Step 3: Cross multiply
   5,105.63x = 7,657.50 × 1,818.83
4. Step 4: Simplify right side
   5,105.63x = 13,927,690.73
5. Step 5: Solve for x
   x = 13,927,690.73/5,105.63
6. Step 6: Final answer
   x = 2,727.91