Finding the Fourth Proportional to 21,936.02, 30,263.83 and 12,499.11

Step by Step Solution

1. Step 1: Write the proportion equation
   21,936.02 : 30,263.83 = 12,499.11 : x
2. Step 2: Convert to fraction form
   21,936.02/30,263.83 = 12,499.11/x
3. Step 3: Cross multiply
   21,936.02x = 30,263.83 × 12,499.11
4. Step 4: Simplify right side
   21,936.02x = 378,270,908.94
5. Step 5: Solve for x
   x = 378,270,908.94/21,936.02
6. Step 6: Final answer
   x = 17,244.29