Finding the Fourth Proportional to 6,261.39, 8,640.54 and 3,608.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,261.39 : 8,640.54 = 3,608.82 : x
2. Step 2: Convert to fraction form
   6,261.39/8,640.54 = 3,608.82/x
3. Step 3: Cross multiply
   6,261.39x = 8,640.54 × 3,608.82
4. Step 4: Simplify right side
   6,261.39x = 31,182,153.56
5. Step 5: Solve for x
   x = 31,182,153.56/6,261.39
6. Step 6: Final answer
   x = 4,980.07