Finding the Fourth Proportional to 2,886.06, 3,990.54 and 2,517

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.06 : 3,990.54 = 2,517 : x
2. Step 2: Convert to fraction form
   2,886.06/3,990.54 = 2,517/x
3. Step 3: Cross multiply
   2,886.06x = 3,990.54 × 2,517
4. Step 4: Simplify right side
   2,886.06x = 10,044,189.18
5. Step 5: Solve for x
   x = 10,044,189.18/2,886.06
6. Step 6: Final answer
   x = 3,480.24