Finding the Fourth Proportional to 16,697.16, 23,041.05 and 9,143.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,697.16 : 23,041.05 = 9,143.58 : x
2. Step 2: Convert to fraction form
   16,697.16/23,041.05 = 9,143.58/x
3. Step 3: Cross multiply
   16,697.16x = 23,041.05 × 9,143.58
4. Step 4: Simplify right side
   16,697.16x = 210,677,683.96
5. Step 5: Solve for x
   x = 210,677,683.96/16,697.16
6. Step 6: Final answer
   x = 12,617.58