Finding the Fourth Proportional to 22,078.47, 30,469.62 and 12,518.76

Step by Step Solution

1. Step 1: Write the proportion equation
   22,078.47 : 30,469.62 = 12,518.76 : x
2. Step 2: Convert to fraction form
   22,078.47/30,469.62 = 12,518.76/x
3. Step 3: Cross multiply
   22,078.47x = 30,469.62 × 12,518.76
4. Step 4: Simplify right side
   22,078.47x = 381,441,860.07
5. Step 5: Solve for x
   x = 381,441,860.07/22,078.47
6. Step 6: Final answer
   x = 17,276.64