Finding the Fourth Proportional to 17,738.07, 24,478.72 and 9,780.58

Step by Step Solution

1. Step 1: Write the proportion equation
   17,738.07 : 24,478.72 = 9,780.58 : x
2. Step 2: Convert to fraction form
   17,738.07/24,478.72 = 9,780.58/x
3. Step 3: Cross multiply
   17,738.07x = 24,478.72 × 9,780.58
4. Step 4: Simplify right side
   17,738.07x = 239,416,079.26
5. Step 5: Solve for x
   x = 239,416,079.26/17,738.07
6. Step 6: Final answer
   x = 13,497.30