Finding the Fourth Proportional to 12,942.94, 19,410.30 and 5,545.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,942.94 : 19,410.30 = 5,545.42 : x
2. Step 2: Convert to fraction form
   12,942.94/19,410.30 = 5,545.42/x
3. Step 3: Cross multiply
   12,942.94x = 19,410.30 × 5,545.42
4. Step 4: Simplify right side
   12,942.94x = 107,638,265.83
5. Step 5: Solve for x
   x = 107,638,265.83/12,942.94
6. Step 6: Final answer
   x = 8,316.37