Finding the Fourth Proportional to 21,833.52, 30,129.39 and 12,401.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,833.52 : 30,129.39 = 12,401.04 : x
2. Step 2: Convert to fraction form
   21,833.52/30,129.39 = 12,401.04/x
3. Step 3: Cross multiply
   21,833.52x = 30,129.39 × 12,401.04
4. Step 4: Simplify right side
   21,833.52x = 373,635,770.57
5. Step 5: Solve for x
   x = 373,635,770.57/21,833.52
6. Step 6: Final answer
   x = 17,112.94