Finding the Fourth Proportional to 6,439.38, 8,885.61 and 3,606.54

Step by Step Solution

1. Step 1: Write the proportion equation
   6,439.38 : 8,885.61 = 3,606.54 : x
2. Step 2: Convert to fraction form
   6,439.38/8,885.61 = 3,606.54/x
3. Step 3: Cross multiply
   6,439.38x = 8,885.61 × 3,606.54
4. Step 4: Simplify right side
   6,439.38x = 32,046,307.89
5. Step 5: Solve for x
   x = 32,046,307.89/6,439.38
6. Step 6: Final answer
   x = 4,976.61