Finding the Fourth Proportional to 8,490.02, 12,735.89 and 2,942.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,490.02 : 12,735.89 = 2,942.09 : x
2. Step 2: Convert to fraction form
   8,490.02/12,735.89 = 2,942.09/x
3. Step 3: Cross multiply
   8,490.02x = 12,735.89 × 2,942.09
4. Step 4: Simplify right side
   8,490.02x = 37,470,056.22
5. Step 5: Solve for x
   x = 37,470,056.22/8,490.02
6. Step 6: Final answer
   x = 4,413.43