Finding the Fourth Proportional to 16,779.64, 23,155.32 and 10,811.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,779.64 : 23,155.32 = 10,811.56 : x
2. Step 2: Convert to fraction form
   16,779.64/23,155.32 = 10,811.56/x
3. Step 3: Cross multiply
   16,779.64x = 23,155.32 × 10,811.56
4. Step 4: Simplify right side
   16,779.64x = 250,345,131.50
5. Step 5: Solve for x
   x = 250,345,131.50/16,779.64
6. Step 6: Final answer
   x = 14,919.58