Finding the Fourth Proportional to 10,896.87, 16,345.91 and 3,105.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,896.87 : 16,345.91 = 3,105.07 : x
2. Step 2: Convert to fraction form
   10,896.87/16,345.91 = 3,105.07/x
3. Step 3: Cross multiply
   10,896.87x = 16,345.91 × 3,105.07
4. Step 4: Simplify right side
   10,896.87x = 50,755,194.76
5. Step 5: Solve for x
   x = 50,755,194.76/10,896.87
6. Step 6: Final answer
   x = 4,657.78