Finding the Fourth Proportional to 16,870.94, 23,281.90 and 9,418.94

Step by Step Solution

1. Step 1: Write the proportion equation
   16,870.94 : 23,281.90 = 9,418.94 : x
2. Step 2: Convert to fraction form
   16,870.94/23,281.90 = 9,418.94/x
3. Step 3: Cross multiply
   16,870.94x = 23,281.90 × 9,418.94
4. Step 4: Simplify right side
   16,870.94x = 219,290,772.09
5. Step 5: Solve for x
   x = 219,290,772.09/16,870.94
6. Step 6: Final answer
   x = 12,998.14