Finding the Fourth Proportional to 16,572.99, 22,865.57 and 9,401.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,572.99 : 22,865.57 = 9,401.72 : x
2. Step 2: Convert to fraction form
   16,572.99/22,865.57 = 9,401.72/x
3. Step 3: Cross multiply
   16,572.99x = 22,865.57 × 9,401.72
4. Step 4: Simplify right side
   16,572.99x = 214,975,686.78
5. Step 5: Solve for x
   x = 214,975,686.78/16,572.99
6. Step 6: Final answer
   x = 12,971.45