Finding the Fourth Proportional to 10,906.63, 16,360.74 and 3,116.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,906.63 : 16,360.74 = 3,116.05 : x
2. Step 2: Convert to fraction form
   10,906.63/16,360.74 = 3,116.05/x
3. Step 3: Cross multiply
   10,906.63x = 16,360.74 × 3,116.05
4. Step 4: Simplify right side
   10,906.63x = 50,980,883.88
5. Step 5: Solve for x
   x = 50,980,883.88/10,906.63
6. Step 6: Final answer
   x = 4,674.30