Finding the Fourth Proportional to 16,821.75, 23,212.90 and 10,103.38

Step by Step Solution

1. Step 1: Write the proportion equation
   16,821.75 : 23,212.90 = 10,103.38 : x
2. Step 2: Convert to fraction form
   16,821.75/23,212.90 = 10,103.38/x
3. Step 3: Cross multiply
   16,821.75x = 23,212.90 × 10,103.38
4. Step 4: Simplify right side
   16,821.75x = 234,528,749.60
5. Step 5: Solve for x
   x = 234,528,749.60/16,821.75
6. Step 6: Final answer
   x = 13,941.99