Finding the Fourth Proportional to 12,601.68, 17,396.28 and 8,412.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,601.68 : 17,396.28 = 8,412.72 : x
2. Step 2: Convert to fraction form
   12,601.68/17,396.28 = 8,412.72/x
3. Step 3: Cross multiply
   12,601.68x = 17,396.28 × 8,412.72
4. Step 4: Simplify right side
   12,601.68x = 146,350,032.68
5. Step 5: Solve for x
   x = 146,350,032.68/12,601.68
6. Step 6: Final answer
   x = 11,613.53