Finding the Fourth Proportional to 16,885.72, 23,300.22 and 10,918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,885.72 : 23,300.22 = 10,918.72 : x
2. Step 2: Convert to fraction form
   16,885.72/23,300.22 = 10,918.72/x
3. Step 3: Cross multiply
   16,885.72x = 23,300.22 × 10,918.72
4. Step 4: Simplify right side
   16,885.72x = 254,408,578.12
5. Step 5: Solve for x
   x = 254,408,578.12/16,885.72
6. Step 6: Final answer
   x = 15,066.49