Finding the Fourth Proportional to 4,698.90, 6,481.63 and 3,105.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,698.90 : 6,481.63 = 3,105.56 : x
2. Step 2: Convert to fraction form
   4,698.90/6,481.63 = 3,105.56/x
3. Step 3: Cross multiply
   4,698.90x = 6,481.63 × 3,105.56
4. Step 4: Simplify right side
   4,698.90x = 20,129,066.89
5. Step 5: Solve for x
   x = 20,129,066.89/4,698.90
6. Step 6: Final answer
   x = 4,283.79