Finding the Fourth Proportional to 17,978.14, 24,807.43 and 10,903.20

Step by Step Solution

1. Step 1: Write the proportion equation
   17,978.14 : 24,807.43 = 10,903.20 : x
2. Step 2: Convert to fraction form
   17,978.14/24,807.43 = 10,903.20/x
3. Step 3: Cross multiply
   17,978.14x = 24,807.43 × 10,903.20
4. Step 4: Simplify right side
   17,978.14x = 270,480,370.78
5. Step 5: Solve for x
   x = 270,480,370.78/17,978.14
6. Step 6: Final answer
   x = 15,044.96