Finding the Fourth Proportional to 10,785.83, 16,167.60 and 7,817.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.83 : 16,167.60 = 7,817.04 : x
2. Step 2: Convert to fraction form
   10,785.83/16,167.60 = 7,817.04/x
3. Step 3: Cross multiply
   10,785.83x = 16,167.60 × 7,817.04
4. Step 4: Simplify right side
   10,785.83x = 126,382,775.90
5. Step 5: Solve for x
   x = 126,382,775.90/10,785.83
6. Step 6: Final answer
   x = 11,717.49