Finding the Fourth Proportional to 21,311.82, 29,410.38 and 12,364.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,311.82 : 29,410.38 = 12,364.62 : x
2. Step 2: Convert to fraction form
   21,311.82/29,410.38 = 12,364.62/x
3. Step 3: Cross multiply
   21,311.82x = 29,410.38 × 12,364.62
4. Step 4: Simplify right side
   21,311.82x = 363,648,172.76
5. Step 5: Solve for x
   x = 363,648,172.76/21,311.82
6. Step 6: Final answer
   x = 17,063.22