Finding the Fourth Proportional to 8,111.64, 12,163.12 and 2,488.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.64 : 12,163.12 = 2,488.32 : x
2. Step 2: Convert to fraction form
   8,111.64/12,163.12 = 2,488.32/x
3. Step 3: Cross multiply
   8,111.64x = 12,163.12 × 2,488.32
4. Step 4: Simplify right side
   8,111.64x = 30,265,734.76
5. Step 5: Solve for x
   x = 30,265,734.76/8,111.64
6. Step 6: Final answer
   x = 3,731.15