Finding the Fourth Proportional to 21,405.30, 29,541.06 and 12,333.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,405.30 : 29,541.06 = 12,333.48 : x
2. Step 2: Convert to fraction form
   21,405.30/29,541.06 = 12,333.48/x
3. Step 3: Cross multiply
   21,405.30x = 29,541.06 × 12,333.48
4. Step 4: Simplify right side
   21,405.30x = 364,344,072.69
5. Step 5: Solve for x
   x = 364,344,072.69/21,405.30
6. Step 6: Final answer
   x = 17,021.21