Finding the Fourth Proportional to 17,978.60, 24,794.42 and 10,892.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.60 : 24,794.42 = 10,892.72 : x
2. Step 2: Convert to fraction form
   17,978.60/24,794.42 = 10,892.72/x
3. Step 3: Cross multiply
   17,978.60x = 24,794.42 × 10,892.72
4. Step 4: Simplify right side
   17,978.60x = 270,078,674.62
5. Step 5: Solve for x
   x = 270,078,674.62/17,978.60
6. Step 6: Final answer
   x = 15,022.23