Finding the Fourth Proportional to 21,355.26, 29,468.01 and 12,401.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,355.26 : 29,468.01 = 12,401.01 : x
2. Step 2: Convert to fraction form
   21,355.26/29,468.01 = 12,401.01/x
3. Step 3: Cross multiply
   21,355.26x = 29,468.01 × 12,401.01
4. Step 4: Simplify right side
   21,355.26x = 365,433,086.69
5. Step 5: Solve for x
   x = 365,433,086.69/21,355.26
6. Step 6: Final answer
   x = 17,112.09