Finding the Fourth Proportional to 16,672, 23,005.36 and 9,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,672 : 23,005.36 = 9,600.72 : x
2. Step 2: Convert to fraction form
   16,672/23,005.36 = 9,600.72/x
3. Step 3: Cross multiply
   16,672x = 23,005.36 × 9,600.72
4. Step 4: Simplify right side
   16,672x = 220,868,019.86
5. Step 5: Solve for x
   x = 220,868,019.86/16,672
6. Step 6: Final answer
   x = 13,247.84