Finding the Fourth Proportional to 16,953.98, 23,395.56 and 9,399.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,953.98 : 23,395.56 = 9,399.87 : x
2. Step 2: Convert to fraction form
   16,953.98/23,395.56 = 9,399.87/x
3. Step 3: Cross multiply
   16,953.98x = 23,395.56 × 9,399.87
4. Step 4: Simplify right side
   16,953.98x = 219,915,187.33
5. Step 5: Solve for x
   x = 219,915,187.33/16,953.98
6. Step 6: Final answer
   x = 12,971.30