Finding the Fourth Proportional to 16,045.61, 22,142.94 and 8,972.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,045.61 : 22,142.94 = 8,972.04 : x
2. Step 2: Convert to fraction form
   16,045.61/22,142.94 = 8,972.04/x
3. Step 3: Cross multiply
   16,045.61x = 22,142.94 × 8,972.04
4. Step 4: Simplify right side
   16,045.61x = 198,667,392.79
5. Step 5: Solve for x
   x = 198,667,392.79/16,045.61
6. Step 6: Final answer
   x = 12,381.42