Finding the Fourth Proportional to 21,625.54, 29,838.72 and 13,132.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,625.54 : 29,838.72 = 13,132.15 : x
2. Step 2: Convert to fraction form
   21,625.54/29,838.72 = 13,132.15/x
3. Step 3: Cross multiply
   21,625.54x = 29,838.72 × 13,132.15
4. Step 4: Simplify right side
   21,625.54x = 391,846,546.85
5. Step 5: Solve for x
   x = 391,846,546.85/21,625.54
6. Step 6: Final answer
   x = 18,119.62