Finding the Fourth Proportional to 10,902.06, 16,349.31 and 3,108.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,902.06 : 16,349.31 = 3,108.78 : x
2. Step 2: Convert to fraction form
   10,902.06/16,349.31 = 3,108.78/x
3. Step 3: Cross multiply
   10,902.06x = 16,349.31 × 3,108.78
4. Step 4: Simplify right side
   10,902.06x = 50,826,407.94
5. Step 5: Solve for x
   x = 50,826,407.94/10,902.06
6. Step 6: Final answer
   x = 4,662.09