Finding the Fourth Proportional to 17,905.16, 24,708.56 and 9,947.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,905.16 : 24,708.56 = 9,947.18 : x
2. Step 2: Convert to fraction form
   17,905.16/24,708.56 = 9,947.18/x
3. Step 3: Cross multiply
   17,905.16x = 24,708.56 × 9,947.18
4. Step 4: Simplify right side
   17,905.16x = 245,780,493.86
5. Step 5: Solve for x
   x = 245,780,493.86/17,905.16
6. Step 6: Final answer
   x = 13,726.80