Finding the Fourth Proportional to 11,856.15, 17,697.42 and 10,454.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,856.15 : 17,697.42 = 10,454.94 : x
2. Step 2: Convert to fraction form
   11,856.15/17,697.42 = 10,454.94/x
3. Step 3: Cross multiply
   11,856.15x = 17,697.42 × 10,454.94
4. Step 4: Simplify right side
   11,856.15x = 185,025,464.25
5. Step 5: Solve for x
   x = 185,025,464.25/11,856.15
6. Step 6: Final answer
   x = 15,605.86