Finding the Fourth Proportional to 12,446.15, 17,172.01 and 7,406.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,446.15 : 17,172.01 = 7,406.33 : x
2. Step 2: Convert to fraction form
   12,446.15/17,172.01 = 7,406.33/x
3. Step 3: Cross multiply
   12,446.15x = 17,172.01 × 7,406.33
4. Step 4: Simplify right side
   12,446.15x = 127,181,572.82
5. Step 5: Solve for x
   x = 127,181,572.82/12,446.15
6. Step 6: Final answer
   x = 10,218.55