Finding the Fourth Proportional to 10,856.91, 16,288.47 and 3,838.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,856.91 : 16,288.47 = 3,838.68 : x
2. Step 2: Convert to fraction form
   10,856.91/16,288.47 = 3,838.68/x
3. Step 3: Cross multiply
   10,856.91x = 16,288.47 × 3,838.68
4. Step 4: Simplify right side
   10,856.91x = 62,526,224.02
5. Step 5: Solve for x
   x = 62,526,224.02/10,856.91
6. Step 6: Final answer
   x = 5,759.12