Finding the Fourth Proportional to 12,855.59, 19,286.22 and 5,466.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,855.59 : 19,286.22 = 5,466.38 : x
2. Step 2: Convert to fraction form
   12,855.59/19,286.22 = 5,466.38/x
3. Step 3: Cross multiply
   12,855.59x = 19,286.22 × 5,466.38
4. Step 4: Simplify right side
   12,855.59x = 105,425,807.28
5. Step 5: Solve for x
   x = 105,425,807.28/12,855.59
6. Step 6: Final answer
   x = 8,200.78