Finding the Fourth Proportional to 8,145.38, 12,215.60 and 3,465.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,145.38 : 12,215.60 = 3,465.34 : x
2. Step 2: Convert to fraction form
   8,145.38/12,215.60 = 3,465.34/x
3. Step 3: Cross multiply
   8,145.38x = 12,215.60 × 3,465.34
4. Step 4: Simplify right side
   8,145.38x = 42,331,207.30
5. Step 5: Solve for x
   x = 42,331,207.30/8,145.38
6. Step 6: Final answer
   x = 5,196.96