Finding the Fourth Proportional to 3,686.44, 5,086.74 and 2,113.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686.44 : 5,086.74 = 2,113.96 : x
2. Step 2: Convert to fraction form
   3,686.44/5,086.74 = 2,113.96/x
3. Step 3: Cross multiply
   3,686.44x = 5,086.74 × 2,113.96
4. Step 4: Simplify right side
   3,686.44x = 10,753,164.89
5. Step 5: Solve for x
   x = 10,753,164.89/3,686.44
6. Step 6: Final answer
   x = 2,916.95