Finding the Fourth Proportional to 16,118.19, 22,243.41 and 9,405.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,118.19 : 22,243.41 = 9,405.72 : x
2. Step 2: Convert to fraction form
   16,118.19/22,243.41 = 9,405.72/x
3. Step 3: Cross multiply
   16,118.19x = 22,243.41 × 9,405.72
4. Step 4: Simplify right side
   16,118.19x = 209,215,286.31
5. Step 5: Solve for x
   x = 209,215,286.31/16,118.19
6. Step 6: Final answer
   x = 12,980.07