Finding the Fourth Proportional to 16,642.78, 22,967.20 and 9,472.35

Step by Step Solution

1. Step 1: Write the proportion equation
   16,642.78 : 22,967.20 = 9,472.35 : x
2. Step 2: Convert to fraction form
   16,642.78/22,967.20 = 9,472.35/x
3. Step 3: Cross multiply
   16,642.78x = 22,967.20 × 9,472.35
4. Step 4: Simplify right side
   16,642.78x = 217,553,194.72
5. Step 5: Solve for x
   x = 217,553,194.72/16,642.78
6. Step 6: Final answer
   x = 13,071.92