Finding the Fourth Proportional to 10,839.83, 16,181.30 and 10,028.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.83 : 16,181.30 = 10,028.21 : x
2. Step 2: Convert to fraction form
   10,839.83/16,181.30 = 10,028.21/x
3. Step 3: Cross multiply
   10,839.83x = 16,181.30 × 10,028.21
4. Step 4: Simplify right side
   10,839.83x = 162,269,418.64
5. Step 5: Solve for x
   x = 162,269,418.64/10,839.83
6. Step 6: Final answer
   x = 14,969.75