Finding the Fourth Proportional to 16,812.63, 23,158.71 and 12,826.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,812.63 : 23,158.71 = 12,826.82 : x
2. Step 2: Convert to fraction form
   16,812.63/23,158.71 = 12,826.82/x
3. Step 3: Cross multiply
   16,812.63x = 23,158.71 × 12,826.82
4. Step 4: Simplify right side
   16,812.63x = 297,052,662.50
5. Step 5: Solve for x
   x = 297,052,662.50/16,812.63
6. Step 6: Final answer
   x = 17,668.42