Finding the Fourth Proportional to 12,620.20, 17,402.82 and 12,334.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,620.20 : 17,402.82 = 12,334.12 : x
2. Step 2: Convert to fraction form
   12,620.20/17,402.82 = 12,334.12/x
3. Step 3: Cross multiply
   12,620.20x = 17,402.82 × 12,334.12
4. Step 4: Simplify right side
   12,620.20x = 214,648,470.22
5. Step 5: Solve for x
   x = 214,648,470.22/12,620.20
6. Step 6: Final answer
   x = 17,008.33