Finding the Fourth Proportional to 16,213.16, 24,320.82 and 5,120.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,213.16 : 24,320.82 = 5,120.30 : x
2. Step 2: Convert to fraction form
   16,213.16/24,320.82 = 5,120.30/x
3. Step 3: Cross multiply
   16,213.16x = 24,320.82 × 5,120.30
4. Step 4: Simplify right side
   16,213.16x = 124,529,894.65
5. Step 5: Solve for x
   x = 124,529,894.65/16,213.16
6. Step 6: Final answer
   x = 7,680.79