Finding the Fourth Proportional to 10,519.83, 14,487.83 and 10,290.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,519.83 : 14,487.83 = 10,290.20 : x
2. Step 2: Convert to fraction form
   10,519.83/14,487.83 = 10,290.20/x
3. Step 3: Cross multiply
   10,519.83x = 14,487.83 × 10,290.20
4. Step 4: Simplify right side
   10,519.83x = 149,082,582.96
5. Step 5: Solve for x
   x = 149,082,582.96/10,519.83
6. Step 6: Final answer
   x = 14,171.58