Finding the Fourth Proportional to 8,145.69, 12,219.22 and 2,599.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.69 : 12,219.22 = 2,599.82 : x
2. Step 2: Convert to fraction form
   8,145.69/12,219.22 = 2,599.82/x
3. Step 3: Cross multiply
   8,145.69x = 12,219.22 × 2,599.82
4. Step 4: Simplify right side
   8,145.69x = 31,767,772.54
5. Step 5: Solve for x
   x = 31,767,772.54/8,145.69
6. Step 6: Final answer
   x = 3,899.95