Finding the Fourth Proportional to 5,980.10, 8,959.71 and 3,896.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,980.10 : 8,959.71 = 3,896.78 : x
2. Step 2: Convert to fraction form
   5,980.10/8,959.71 = 3,896.78/x
3. Step 3: Cross multiply
   5,980.10x = 8,959.71 × 3,896.78
4. Step 4: Simplify right side
   5,980.10x = 34,914,018.73
5. Step 5: Solve for x
   x = 34,914,018.73/5,980.10
6. Step 6: Final answer
   x = 5,838.37