Finding the Fourth Proportional to 16,793.58, 25,212.24 and 12,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,793.58 : 25,212.24 = 12,900.72 : x
2. Step 2: Convert to fraction form
   16,793.58/25,212.24 = 12,900.72/x
3. Step 3: Cross multiply
   16,793.58x = 25,212.24 × 12,900.72
4. Step 4: Simplify right side
   16,793.58x = 325,256,048.81
5. Step 5: Solve for x
   x = 325,256,048.81/16,793.58
6. Step 6: Final answer
   x = 19,367.88