Finding the Fourth Proportional to 12,438.48, 17,151.94 and 9,606.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,438.48 : 17,151.94 = 9,606.31 : x
2. Step 2: Convert to fraction form
   12,438.48/17,151.94 = 9,606.31/x
3. Step 3: Cross multiply
   12,438.48x = 17,151.94 × 9,606.31
4. Step 4: Simplify right side
   12,438.48x = 164,766,852.74
5. Step 5: Solve for x
   x = 164,766,852.74/12,438.48
6. Step 6: Final answer
   x = 13,246.55