Finding the Fourth Proportional to 16,561.89, 24,818.67 and 7,679.93

Step by Step Solution

1. Step 1: Write the proportion equation
   16,561.89 : 24,818.67 = 7,679.93 : x
2. Step 2: Convert to fraction form
   16,561.89/24,818.67 = 7,679.93/x
3. Step 3: Cross multiply
   16,561.89x = 24,818.67 × 7,679.93
4. Step 4: Simplify right side
   16,561.89x = 190,605,524.20
5. Step 5: Solve for x
   x = 190,605,524.20/16,561.89
6. Step 6: Final answer
   x = 11,508.68