Finding the Fourth Proportional to 16,579.50, 22,899.15 and 10,980.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,579.50 : 22,899.15 = 10,980.78 : x
2. Step 2: Convert to fraction form
   16,579.50/22,899.15 = 10,980.78/x
3. Step 3: Cross multiply
   16,579.50x = 22,899.15 × 10,980.78
4. Step 4: Simplify right side
   16,579.50x = 251,450,528.34
5. Step 5: Solve for x
   x = 251,450,528.34/16,579.50
6. Step 6: Final answer
   x = 15,166.35