Finding the Fourth Proportional to 21,353.37, 29,467.85 and 12,401.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,353.37 : 29,467.85 = 12,401.25 : x
2. Step 2: Convert to fraction form
   21,353.37/29,467.85 = 12,401.25/x
3. Step 3: Cross multiply
   21,353.37x = 29,467.85 × 12,401.25
4. Step 4: Simplify right side
   21,353.37x = 365,438,112.81
5. Step 5: Solve for x
   x = 365,438,112.81/21,353.37
6. Step 6: Final answer
   x = 17,113.84