Finding the Fourth Proportional to 17,738.21, 24,478.67 and 9,780.37

Step by Step Solution

1. Step 1: Write the proportion equation
   17,738.21 : 24,478.67 = 9,780.37 : x
2. Step 2: Convert to fraction form
   17,738.21/24,478.67 = 9,780.37/x
3. Step 3: Cross multiply
   17,738.21x = 24,478.67 × 9,780.37
4. Step 4: Simplify right side
   17,738.21x = 239,410,449.71
5. Step 5: Solve for x
   x = 239,410,449.71/17,738.21
6. Step 6: Final answer
   x = 13,496.88