Finding the Fourth Proportional to 6,080.78, 8,389.56 and 3,561.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,080.78 : 8,389.56 = 3,561.18 : x
2. Step 2: Convert to fraction form
   6,080.78/8,389.56 = 3,561.18/x
3. Step 3: Cross multiply
   6,080.78x = 8,389.56 × 3,561.18
4. Step 4: Simplify right side
   6,080.78x = 29,876,673.53
5. Step 5: Solve for x
   x = 29,876,673.53/6,080.78
6. Step 6: Final answer
   x = 4,913.30