Finding the Fourth Proportional to 17,375.86, 23,978.74 and 9,418.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,375.86 : 23,978.74 = 9,418.12 : x
2. Step 2: Convert to fraction form
   17,375.86/23,978.74 = 9,418.12/x
3. Step 3: Cross multiply
   17,375.86x = 23,978.74 × 9,418.12
4. Step 4: Simplify right side
   17,375.86x = 225,834,513.49
5. Step 5: Solve for x
   x = 225,834,513.49/17,375.86
6. Step 6: Final answer
   x = 12,997.03