Finding the Fourth Proportional to 12,446.42, 17,167.27 and 7,406.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.42 : 17,167.27 = 7,406.75 : x
2. Step 2: Convert to fraction form
   12,446.42/17,167.27 = 7,406.75/x
3. Step 3: Cross multiply
   12,446.42x = 17,167.27 × 7,406.75
4. Step 4: Simplify right side
   12,446.42x = 127,153,718.67
5. Step 5: Solve for x
   x = 127,153,718.67/12,446.42
6. Step 6: Final answer
   x = 10,216.09