Finding the Fourth Proportional to 6,436.56, 9,651.29 and 3,478.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,436.56 : 9,651.29 = 3,478.55 : x
2. Step 2: Convert to fraction form
   6,436.56/9,651.29 = 3,478.55/x
3. Step 3: Cross multiply
   6,436.56x = 9,651.29 × 3,478.55
4. Step 4: Simplify right side
   6,436.56x = 33,572,429.18
5. Step 5: Solve for x
   x = 33,572,429.18/6,436.56
6. Step 6: Final answer
   x = 5,215.89