Finding the Fourth Proportional to 16,942.57, 23,382.37 and 9,390.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,942.57 : 23,382.37 = 9,390.53 : x
2. Step 2: Convert to fraction form
   16,942.57/23,382.37 = 9,390.53/x
3. Step 3: Cross multiply
   16,942.57x = 23,382.37 × 9,390.53
4. Step 4: Simplify right side
   16,942.57x = 219,572,917.15
5. Step 5: Solve for x
   x = 219,572,917.15/16,942.57
6. Step 6: Final answer
   x = 12,959.84