Finding the Fourth Proportional to 21,883.02, 30,200.79 and 12,933.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,883.02 : 30,200.79 = 12,933.42 : x
2. Step 2: Convert to fraction form
   21,883.02/30,200.79 = 12,933.42/x
3. Step 3: Cross multiply
   21,883.02x = 30,200.79 × 12,933.42
4. Step 4: Simplify right side
   21,883.02x = 390,599,501.40
5. Step 5: Solve for x
   x = 390,599,501.40/21,883.02
6. Step 6: Final answer
   x = 17,849.43