Finding the Fourth Proportional to 12,216.56, 16,856.71 and 7,502.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,216.56 : 16,856.71 = 7,502.36 : x
2. Step 2: Convert to fraction form
   12,216.56/16,856.71 = 7,502.36/x
3. Step 3: Cross multiply
   12,216.56x = 16,856.71 × 7,502.36
4. Step 4: Simplify right side
   12,216.56x = 126,465,003.80
5. Step 5: Solve for x
   x = 126,465,003.80/12,216.56
6. Step 6: Final answer
   x = 10,351.94