Finding the Fourth Proportional to 8,344.72, 12,516.72 and 3,412.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,344.72 : 12,516.72 = 3,412.72 : x
2. Step 2: Convert to fraction form
   8,344.72/12,516.72 = 3,412.72/x
3. Step 3: Cross multiply
   8,344.72x = 12,516.72 × 3,412.72
4. Step 4: Simplify right side
   8,344.72x = 42,716,060.68
5. Step 5: Solve for x
   x = 42,716,060.68/8,344.72
6. Step 6: Final answer
   x = 5,118.93