Finding the Fourth Proportional to 16,845.57, 23,225.94 and 12,860.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,845.57 : 23,225.94 = 12,860.37 : x
2. Step 2: Convert to fraction form
   16,845.57/23,225.94 = 12,860.37/x
3. Step 3: Cross multiply
   16,845.57x = 23,225.94 × 12,860.37
4. Step 4: Simplify right side
   16,845.57x = 298,694,182.00
5. Step 5: Solve for x
   x = 298,694,182.00/16,845.57
6. Step 6: Final answer
   x = 17,731.32