Finding the Fourth Proportional to 21,476.34, 29,638.71 and 12,045.51

Step by Step Solution

1. Step 1: Write the proportion equation
   21,476.34 : 29,638.71 = 12,045.51 : x
2. Step 2: Convert to fraction form
   21,476.34/29,638.71 = 12,045.51/x
3. Step 3: Cross multiply
   21,476.34x = 29,638.71 × 12,045.51
4. Step 4: Simplify right side
   21,476.34x = 357,013,377.69
5. Step 5: Solve for x
   x = 357,013,377.69/21,476.34
6. Step 6: Final answer
   x = 16,623.57