Finding the Fourth Proportional to 11,856.57, 16,362.49 and 7,826.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,856.57 : 16,362.49 = 7,826.94 : x
2. Step 2: Convert to fraction form
   11,856.57/16,362.49 = 7,826.94/x
3. Step 3: Cross multiply
   11,856.57x = 16,362.49 × 7,826.94
4. Step 4: Simplify right side
   11,856.57x = 128,068,227.48
5. Step 5: Solve for x
   x = 128,068,227.48/11,856.57
6. Step 6: Final answer
   x = 10,801.46