Finding the Fourth Proportional to 8,343.39, 12,515.04 and 2,499.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,343.39 : 12,515.04 = 2,499.78 : x
2. Step 2: Convert to fraction form
   8,343.39/12,515.04 = 2,499.78/x
3. Step 3: Cross multiply
   8,343.39x = 12,515.04 × 2,499.78
4. Step 4: Simplify right side
   8,343.39x = 31,284,846.69
5. Step 5: Solve for x
   x = 31,284,846.69/8,343.39
6. Step 6: Final answer
   x = 3,749.66