Finding the Fourth Proportional to 16,045.79, 22,143.87 and 8,972.15

Step by Step Solution

1. Step 1: Write the proportion equation
   16,045.79 : 22,143.87 = 8,972.15 : x
2. Step 2: Convert to fraction form
   16,045.79/22,143.87 = 8,972.15/x
3. Step 3: Cross multiply
   16,045.79x = 22,143.87 × 8,972.15
4. Step 4: Simplify right side
   16,045.79x = 198,678,012.50
5. Step 5: Solve for x
   x = 198,678,012.50/16,045.79
6. Step 6: Final answer
   x = 12,381.94