Finding the Fourth Proportional to 8,519.99, 12,777.89 and 2,972.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,519.99 : 12,777.89 = 2,972.52 : x
2. Step 2: Convert to fraction form
   8,519.99/12,777.89 = 2,972.52/x
3. Step 3: Cross multiply
   8,519.99x = 12,777.89 × 2,972.52
4. Step 4: Simplify right side
   8,519.99x = 37,982,518.72
5. Step 5: Solve for x
   x = 37,982,518.72/8,519.99
6. Step 6: Final answer
   x = 4,458.05