Finding the Fourth Proportional to 16,630.30, 23,321.30 and 16,630.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,630.30 : 23,321.30 = 16,630.30 : x
2. Step 2: Convert to fraction form
   16,630.30/23,321.30 = 16,630.30/x
3. Step 3: Cross multiply
   16,630.30x = 23,321.30 × 16,630.30
4. Step 4: Simplify right side
   16,630.30x = 387,840,215.39
5. Step 5: Solve for x
   x = 387,840,215.39/16,630.30
6. Step 6: Final answer
   x = 23,321.30