Finding the Fourth Proportional to 12,404.10, 17,400.30 and 12,404.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,404.10 : 17,400.30 = 12,404.10 : x
2. Step 2: Convert to fraction form
   12,404.10/17,400.30 = 12,404.10/x
3. Step 3: Cross multiply
   12,404.10x = 17,400.30 × 12,404.10
4. Step 4: Simplify right side
   12,404.10x = 215,835,061.23
5. Step 5: Solve for x
   x = 215,835,061.23/12,404.10
6. Step 6: Final answer
   x = 17,400.30