Finding the Fourth Proportional to 12,401.10, 17,396.10 and 12,401.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,401.10 : 17,396.10 = 12,401.10 : x
2. Step 2: Convert to fraction form
   12,401.10/17,396.10 = 12,401.10/x
3. Step 3: Cross multiply
   12,401.10x = 17,396.10 × 12,401.10
4. Step 4: Simplify right side
   12,401.10x = 215,730,775.71
5. Step 5: Solve for x
   x = 215,730,775.71/12,401.10
6. Step 6: Final answer
   x = 17,396.10