Finding the Fourth Proportional to 12,798.72, 19,198.20 and 3,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,798.72 : 19,198.20 = 3,564.72 : x
2. Step 2: Convert to fraction form
   12,798.72/19,198.20 = 3,564.72/x
3. Step 3: Cross multiply
   12,798.72x = 19,198.20 × 3,564.72
4. Step 4: Simplify right side
   12,798.72x = 68,436,207.50
5. Step 5: Solve for x
   x = 68,436,207.50/12,798.72
6. Step 6: Final answer
   x = 5,347.11