Finding the Fourth Proportional to 22,153.15, 30,568.48 and 12,591.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,153.15 : 30,568.48 = 12,591.78 : x
2. Step 2: Convert to fraction form
   22,153.15/30,568.48 = 12,591.78/x
3. Step 3: Cross multiply
   22,153.15x = 30,568.48 × 12,591.78
4. Step 4: Simplify right side
   22,153.15x = 384,911,575.09
5. Step 5: Solve for x
   x = 384,911,575.09/22,153.15
6. Step 6: Final answer
   x = 17,375.03