Finding the Fourth Proportional to 12,804, 19,206.72 and 3,570.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,804 : 19,206.72 = 3,570.72 : x
2. Step 2: Convert to fraction form
   12,804/19,206.72 = 3,570.72/x
3. Step 3: Cross multiply
   12,804x = 19,206.72 × 3,570.72
4. Step 4: Simplify right side
   12,804x = 68,581,819.24
5. Step 5: Solve for x
   x = 68,581,819.24/12,804
6. Step 6: Final answer
   x = 5,356.28