Finding the Fourth Proportional to 3,617.79, 5,427.38 and 2,386.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,617.79 : 5,427.38 = 2,386.25 : x
2. Step 2: Convert to fraction form
   3,617.79/5,427.38 = 2,386.25/x
3. Step 3: Cross multiply
   3,617.79x = 5,427.38 × 2,386.25
4. Step 4: Simplify right side
   3,617.79x = 12,951,046.46
5. Step 5: Solve for x
   x = 12,951,046.46/3,617.79
6. Step 6: Final answer
   x = 3,579.82