Finding the Fourth Proportional to 3,826.08, 5,278.23 and 2,499.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,826.08 : 5,278.23 = 2,499.30 : x
2. Step 2: Convert to fraction form
   3,826.08/5,278.23 = 2,499.30/x
3. Step 3: Cross multiply
   3,826.08x = 5,278.23 × 2,499.30
4. Step 4: Simplify right side
   3,826.08x = 13,191,880.24
5. Step 5: Solve for x
   x = 13,191,880.24/3,826.08
6. Step 6: Final answer
   x = 3,447.88