Finding the Fourth Proportional to 3,665.31, 5,056.65 and 2,547.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.31 : 5,056.65 = 2,547.15 : x
2. Step 2: Convert to fraction form
   3,665.31/5,056.65 = 2,547.15/x
3. Step 3: Cross multiply
   3,665.31x = 5,056.65 × 2,547.15
4. Step 4: Simplify right side
   3,665.31x = 12,880,046.05
5. Step 5: Solve for x
   x = 12,880,046.05/3,665.31
6. Step 6: Final answer
   x = 3,514.04