Finding the Fourth Proportional to 21,435.34, 29,579.94 and 12,003.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,435.34 : 29,579.94 = 12,003.42 : x
2. Step 2: Convert to fraction form
   21,435.34/29,579.94 = 12,003.42/x
3. Step 3: Cross multiply
   21,435.34x = 29,579.94 × 12,003.42
4. Step 4: Simplify right side
   21,435.34x = 355,060,443.39
5. Step 5: Solve for x
   x = 355,060,443.39/21,435.34
6. Step 6: Final answer
   x = 16,564.26