Finding the Fourth Proportional to 12,741.49, 17,586.89 and 7,439.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,741.49 : 17,586.89 = 7,439.23 : x
2. Step 2: Convert to fraction form
   12,741.49/17,586.89 = 7,439.23/x
3. Step 3: Cross multiply
   12,741.49x = 17,586.89 × 7,439.23
4. Step 4: Simplify right side
   12,741.49x = 130,832,919.69
5. Step 5: Solve for x
   x = 130,832,919.69/12,741.49
6. Step 6: Final answer
   x = 10,268.26