Finding the Fourth Proportional to 10,904.64, 16,355.18 and 3,111.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,904.64 : 16,355.18 = 3,111.62 : x
2. Step 2: Convert to fraction form
   10,904.64/16,355.18 = 3,111.62/x
3. Step 3: Cross multiply
   10,904.64x = 16,355.18 × 3,111.62
4. Step 4: Simplify right side
   10,904.64x = 50,891,105.19
5. Step 5: Solve for x
   x = 50,891,105.19/10,904.64
6. Step 6: Final answer
   x = 4,666.92