Finding the Fourth Proportional to 16,311.21, 24,470.59 and 5,780.67

Step by Step Solution

1. Step 1: Write the proportion equation
   16,311.21 : 24,470.59 = 5,780.67 : x
2. Step 2: Convert to fraction form
   16,311.21/24,470.59 = 5,780.67/x
3. Step 3: Cross multiply
   16,311.21x = 24,470.59 × 5,780.67
4. Step 4: Simplify right side
   16,311.21x = 141,456,405.50
5. Step 5: Solve for x
   x = 141,456,405.50/16,311.21
6. Step 6: Final answer
   x = 8,672.34