Finding the Fourth Proportional to 6,488.46, 9,734.22 and 2,105.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,488.46 : 9,734.22 = 2,105.55 : x
2. Step 2: Convert to fraction form
   6,488.46/9,734.22 = 2,105.55/x
3. Step 3: Cross multiply
   6,488.46x = 9,734.22 × 2,105.55
4. Step 4: Simplify right side
   6,488.46x = 20,495,886.92
5. Step 5: Solve for x
   x = 20,495,886.92/6,488.46
6. Step 6: Final answer
   x = 3,158.82