Finding the Fourth Proportional to 21,411.84, 29,541.06 and 12,451.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,411.84 : 29,541.06 = 12,451.89 : x
2. Step 2: Convert to fraction form
   21,411.84/29,541.06 = 12,451.89/x
3. Step 3: Cross multiply
   21,411.84x = 29,541.06 × 12,451.89
4. Step 4: Simplify right side
   21,411.84x = 367,842,029.60
5. Step 5: Solve for x
   x = 367,842,029.60/21,411.84
6. Step 6: Final answer
   x = 17,179.38