Finding the Fourth Proportional to 11,895.15, 16,411.61 and 7,916.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,895.15 : 16,411.61 = 7,916.94 : x
2. Step 2: Convert to fraction form
   11,895.15/16,411.61 = 7,916.94/x
3. Step 3: Cross multiply
   11,895.15x = 16,411.61 × 7,916.94
4. Step 4: Simplify right side
   11,895.15x = 129,929,751.47
5. Step 5: Solve for x
   x = 129,929,751.47/11,895.15
6. Step 6: Final answer
   x = 10,922.91