Finding the Fourth Proportional to 17,665.32, 26,454.78 and 8,409

Step by Step Solution

1. Step 1: Write the proportion equation
   17,665.32 : 26,454.78 = 8,409 : x
2. Step 2: Convert to fraction form
   17,665.32/26,454.78 = 8,409/x
3. Step 3: Cross multiply
   17,665.32x = 26,454.78 × 8,409
4. Step 4: Simplify right side
   17,665.32x = 222,458,245.02
5. Step 5: Solve for x
   x = 222,458,245.02/17,665.32
6. Step 6: Final answer
   x = 12,592.94