Finding the Fourth Proportional to 17,278.25, 23,843.71 and 9,621.47

Step by Step Solution

1. Step 1: Write the proportion equation
   17,278.25 : 23,843.71 = 9,621.47 : x
2. Step 2: Convert to fraction form
   17,278.25/23,843.71 = 9,621.47/x
3. Step 3: Cross multiply
   17,278.25x = 23,843.71 × 9,621.47
4. Step 4: Simplify right side
   17,278.25x = 229,411,421.24
5. Step 5: Solve for x
   x = 229,411,421.24/17,278.25
6. Step 6: Final answer
   x = 13,277.47