Finding the Fourth Proportional to 12,945.94, 19,414.80 and 5,548.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945.94 : 19,414.80 = 5,548.42 : x
2. Step 2: Convert to fraction form
   12,945.94/19,414.80 = 5,548.42/x
3. Step 3: Cross multiply
   12,945.94x = 19,414.80 × 5,548.42
4. Step 4: Simplify right side
   12,945.94x = 107,721,464.62
5. Step 5: Solve for x
   x = 107,721,464.62/12,945.94
6. Step 6: Final answer
   x = 8,320.87