Finding the Fourth Proportional to 16,790.42, 23,171.56 and 9,236.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,790.42 : 23,171.56 = 9,236.61 : x
2. Step 2: Convert to fraction form
   16,790.42/23,171.56 = 9,236.61/x
3. Step 3: Cross multiply
   16,790.42x = 23,171.56 × 9,236.61
4. Step 4: Simplify right side
   16,790.42x = 214,026,662.81
5. Step 5: Solve for x
   x = 214,026,662.81/16,790.42
6. Step 6: Final answer
   x = 12,746.95