Finding the Fourth Proportional to 22,119.60, 30,524.52 and 12,687.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,119.60 : 30,524.52 = 12,687.54 : x
2. Step 2: Convert to fraction form
   22,119.60/30,524.52 = 12,687.54/x
3. Step 3: Cross multiply
   22,119.60x = 30,524.52 × 12,687.54
4. Step 4: Simplify right side
   22,119.60x = 387,281,068.48
5. Step 5: Solve for x
   x = 387,281,068.48/22,119.60
6. Step 6: Final answer
   x = 17,508.50