Finding the Fourth Proportional to 16,624.72, 22,941.48 and 9,172.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,624.72 : 22,941.48 = 9,172.72 : x
2. Step 2: Convert to fraction form
   16,624.72/22,941.48 = 9,172.72/x
3. Step 3: Cross multiply
   16,624.72x = 22,941.48 × 9,172.72
4. Step 4: Simplify right side
   16,624.72x = 210,435,772.43
5. Step 5: Solve for x
   x = 210,435,772.43/16,624.72
6. Step 6: Final answer
   x = 12,658.00