Finding the Fourth Proportional to 17,427.15, 24,042.78 and 12,900.60

Step by Step Solution

1. Step 1: Write the proportion equation
   17,427.15 : 24,042.78 = 12,900.60 : x
2. Step 2: Convert to fraction form
   17,427.15/24,042.78 = 12,900.60/x
3. Step 3: Cross multiply
   17,427.15x = 24,042.78 × 12,900.60
4. Step 4: Simplify right side
   17,427.15x = 310,166,287.67
5. Step 5: Solve for x
   x = 310,166,287.67/17,427.15
6. Step 6: Final answer
   x = 17,797.88