Finding the Fourth Proportional to 12,969.38, 19,455.45 and 3,609.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,969.38 : 19,455.45 = 3,609.42 : x
2. Step 2: Convert to fraction form
   12,969.38/19,455.45 = 3,609.42/x
3. Step 3: Cross multiply
   12,969.38x = 19,455.45 × 3,609.42
4. Step 4: Simplify right side
   12,969.38x = 70,222,890.34
5. Step 5: Solve for x
   x = 70,222,890.34/12,969.38
6. Step 6: Final answer
   x = 5,414.52