Finding the Fourth Proportional to 10,908.63, 16,363.74 and 3,118.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,908.63 : 16,363.74 = 3,118.05 : x
2. Step 2: Convert to fraction form
   10,908.63/16,363.74 = 3,118.05/x
3. Step 3: Cross multiply
   10,908.63x = 16,363.74 × 3,118.05
4. Step 4: Simplify right side
   10,908.63x = 51,022,959.51
5. Step 5: Solve for x
   x = 51,022,959.51/10,908.63
6. Step 6: Final answer
   x = 4,677.30