Finding the Fourth Proportional to 21,944.64, 30,283.83 and 12,513.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,944.64 : 30,283.83 = 12,513.81 : x
2. Step 2: Convert to fraction form
   21,944.64/30,283.83 = 12,513.81/x
3. Step 3: Cross multiply
   21,944.64x = 30,283.83 × 12,513.81
4. Step 4: Simplify right side
   21,944.64x = 378,966,094.69
5. Step 5: Solve for x
   x = 378,966,094.69/21,944.64
6. Step 6: Final answer
   x = 17,269.19