Finding the Fourth Proportional to 20,819.00, 31,260.17 and 18,185.00

Step by Step Solution

1. Step 1: Write the proportion equation
   20,819.00 : 31,260.17 = 18,185.00 : x
2. Step 2: Convert to fraction form
   20,819.00/31,260.17 = 18,185.00/x
3. Step 3: Cross multiply
   20,819.00x = 31,260.17 × 18,185.00
4. Step 4: Simplify right side
   20,819.00x = 568,466,080.61
5. Step 5: Solve for x
   x = 568,466,080.61/20,819.00
6. Step 6: Final answer
   x = 27,305.16