Finding the Fourth Proportional to 19,662.67, 29,424.72 and 12,270.61

Step by Step Solution

1. Step 1: Write the proportion equation
   19,662.67 : 29,424.72 = 12,270.61 : x
2. Step 2: Convert to fraction form
   19,662.67/29,424.72 = 12,270.61/x
3. Step 3: Cross multiply
   19,662.67x = 29,424.72 × 12,270.61
4. Step 4: Simplify right side
   19,662.67x = 361,059,263.48
5. Step 5: Solve for x
   x = 361,059,263.48/19,662.67
6. Step 6: Final answer
   x = 18,362.68