Finding the Fourth Proportional to 16,983.20, 25,499.10 and 12,852.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,983.20 : 25,499.10 = 12,852.20 : x
2. Step 2: Convert to fraction form
   16,983.20/25,499.10 = 12,852.20/x
3. Step 3: Cross multiply
   16,983.20x = 25,499.10 × 12,852.20
4. Step 4: Simplify right side
   16,983.20x = 327,719,533.02
5. Step 5: Solve for x
   x = 327,719,533.02/16,983.20
6. Step 6: Final answer
   x = 19,296.69