Finding the Fourth Proportional to 12,426.96, 17,146.38 and 9,071.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.96 : 17,146.38 = 9,071.60 : x
2. Step 2: Convert to fraction form
   12,426.96/17,146.38 = 9,071.60/x
3. Step 3: Cross multiply
   12,426.96x = 17,146.38 × 9,071.60
4. Step 4: Simplify right side
   12,426.96x = 155,545,100.81
5. Step 5: Solve for x
   x = 155,545,100.81/12,426.96
6. Step 6: Final answer
   x = 12,516.75