Finding the Fourth Proportional to 3,680.79, 5,076.72 and 2,499.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,680.79 : 5,076.72 = 2,499.81 : x
2. Step 2: Convert to fraction form
   3,680.79/5,076.72 = 2,499.81/x
3. Step 3: Cross multiply
   3,680.79x = 5,076.72 × 2,499.81
4. Step 4: Simplify right side
   3,680.79x = 12,690,835.42
5. Step 5: Solve for x
   x = 12,690,835.42/3,680.79
6. Step 6: Final answer
   x = 3,447.86