Finding the Fourth Proportional to 16,906.47, 23,320.76 and 12,441.75

Step by Step Solution

1. Step 1: Write the proportion equation
   16,906.47 : 23,320.76 = 12,441.75 : x
2. Step 2: Convert to fraction form
   16,906.47/23,320.76 = 12,441.75/x
3. Step 3: Cross multiply
   16,906.47x = 23,320.76 × 12,441.75
4. Step 4: Simplify right side
   16,906.47x = 290,151,003.52
5. Step 5: Solve for x
   x = 290,151,003.52/16,906.47
6. Step 6: Final answer
   x = 17,162.13