Finding the Fourth Proportional to 21,836.83, 30,134.82 and 11,900.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,836.83 : 30,134.82 = 11,900.83 : x
2. Step 2: Convert to fraction form
   21,836.83/30,134.82 = 11,900.83/x
3. Step 3: Cross multiply
   21,836.83x = 30,134.82 × 11,900.83
4. Step 4: Simplify right side
   21,836.83x = 358,629,369.90
5. Step 5: Solve for x
   x = 358,629,369.90/21,836.83
6. Step 6: Final answer
   x = 16,423.14