Finding the Fourth Proportional to 6,261.29, 8,638.63 and 3,608.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,261.29 : 8,638.63 = 3,608.34 : x
2. Step 2: Convert to fraction form
   6,261.29/8,638.63 = 3,608.34/x
3. Step 3: Cross multiply
   6,261.29x = 8,638.63 × 3,608.34
4. Step 4: Simplify right side
   6,261.29x = 31,171,105.15
5. Step 5: Solve for x
   x = 31,171,105.15/6,261.29
6. Step 6: Final answer
   x = 4,978.38