Finding the Fourth Proportional to 17,376.09, 23,978.72 and 9,418.25

Step by Step Solution

1. Step 1: Write the proportion equation
   17,376.09 : 23,978.72 = 9,418.25 : x
2. Step 2: Convert to fraction form
   17,376.09/23,978.72 = 9,418.25/x
3. Step 3: Cross multiply
   17,376.09x = 23,978.72 × 9,418.25
4. Step 4: Simplify right side
   17,376.09x = 225,837,412.66
5. Step 5: Solve for x
   x = 225,837,412.66/17,376.09
6. Step 6: Final answer
   x = 12,997.02