Finding the Fourth Proportional to 20,550.83, 28,360.56 and 12,059.51

Step by Step Solution

1. Step 1: Write the proportion equation
   20,550.83 : 28,360.56 = 12,059.51 : x
2. Step 2: Convert to fraction form
   20,550.83/28,360.56 = 12,059.51/x
3. Step 3: Cross multiply
   20,550.83x = 28,360.56 × 12,059.51
4. Step 4: Simplify right side
   20,550.83x = 342,014,315.12
5. Step 5: Solve for x
   x = 342,014,315.12/20,550.83
6. Step 6: Final answer
   x = 16,642.36