Finding the Fourth Proportional to 16,810.76, 25,194.56 and 8,472.12

Step by Step Solution

1. Step 1: Write the proportion equation
   16,810.76 : 25,194.56 = 8,472.12 : x
2. Step 2: Convert to fraction form
   16,810.76/25,194.56 = 8,472.12/x
3. Step 3: Cross multiply
   16,810.76x = 25,194.56 × 8,472.12
4. Step 4: Simplify right side
   16,810.76x = 213,451,335.67
5. Step 5: Solve for x
   x = 213,451,335.67/16,810.76
6. Step 6: Final answer
   x = 12,697.30