Finding the Fourth Proportional to 16,672.63, 23,007.90 and 9,118.94

Step by Step Solution

1. Step 1: Write the proportion equation
   16,672.63 : 23,007.90 = 9,118.94 : x
2. Step 2: Convert to fraction form
   16,672.63/23,007.90 = 9,118.94/x
3. Step 3: Cross multiply
   16,672.63x = 23,007.90 × 9,118.94
4. Step 4: Simplify right side
   16,672.63x = 209,807,544.59
5. Step 5: Solve for x
   x = 209,807,544.59/16,672.63
6. Step 6: Final answer
   x = 12,583.95