Finding the Fourth Proportional to 16,418.61, 22,658.83 and 9,345.03

Step by Step Solution

1. Step 1: Write the proportion equation
   16,418.61 : 22,658.83 = 9,345.03 : x
2. Step 2: Convert to fraction form
   16,418.61/22,658.83 = 9,345.03/x
3. Step 3: Cross multiply
   16,418.61x = 22,658.83 × 9,345.03
4. Step 4: Simplify right side
   16,418.61x = 211,747,427.79
5. Step 5: Solve for x
   x = 211,747,427.79/16,418.61
6. Step 6: Final answer
   x = 12,896.80