Finding the Fourth Proportional to 3,935.30, 5,427.86 and 2,674.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,935.30 : 5,427.86 = 2,674.15 : x
2. Step 2: Convert to fraction form
   3,935.30/5,427.86 = 2,674.15/x
3. Step 3: Cross multiply
   3,935.30x = 5,427.86 × 2,674.15
4. Step 4: Simplify right side
   3,935.30x = 14,514,911.82
5. Step 5: Solve for x
   x = 14,514,911.82/3,935.30
6. Step 6: Final answer
   x = 3,688.39