Finding the Fourth Proportional to 16,579.89, 24,880.77 and 7,815.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,579.89 : 24,880.77 = 7,815.69 : x
2. Step 2: Convert to fraction form
   16,579.89/24,880.77 = 7,815.69/x
3. Step 3: Cross multiply
   16,579.89x = 24,880.77 × 7,815.69
4. Step 4: Simplify right side
   16,579.89x = 194,460,385.28
5. Step 5: Solve for x
   x = 194,460,385.28/16,579.89
6. Step 6: Final answer
   x = 11,728.69