Finding the Fourth Proportional to 12,674.56, 19,010.12 and 3,315.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,674.56 : 19,010.12 = 3,315.20 : x
2. Step 2: Convert to fraction form
   12,674.56/19,010.12 = 3,315.20/x
3. Step 3: Cross multiply
   12,674.56x = 19,010.12 × 3,315.20
4. Step 4: Simplify right side
   12,674.56x = 63,022,349.82
5. Step 5: Solve for x
   x = 63,022,349.82/12,674.56
6. Step 6: Final answer
   x = 4,972.35