Finding the Fourth Proportional to 17,677.91, 24,394.89 and 9,720.07

Step by Step Solution

1. Step 1: Write the proportion equation
   17,677.91 : 24,394.89 = 9,720.07 : x
2. Step 2: Convert to fraction form
   17,677.91/24,394.89 = 9,720.07/x
3. Step 3: Cross multiply
   17,677.91x = 24,394.89 × 9,720.07
4. Step 4: Simplify right side
   17,677.91x = 237,119,959.23
5. Step 5: Solve for x
   x = 237,119,959.23/17,677.91
6. Step 6: Final answer
   x = 13,413.35