Finding the Fourth Proportional to 12,465.28, 18,697.82 and 3,105.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,465.28 : 18,697.82 = 3,105.22 : x
2. Step 2: Convert to fraction form
   12,465.28/18,697.82 = 3,105.22/x
3. Step 3: Cross multiply
   12,465.28x = 18,697.82 × 3,105.22
4. Step 4: Simplify right side
   12,465.28x = 58,060,844.62
5. Step 5: Solve for x
   x = 58,060,844.62/12,465.28
6. Step 6: Final answer
   x = 4,657.81