Finding the Fourth Proportional to 12,434.56, 17,148.16 and 8,238.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.56 : 17,148.16 = 8,238.08 : x
2. Step 2: Convert to fraction form
   12,434.56/17,148.16 = 8,238.08/x
3. Step 3: Cross multiply
   12,434.56x = 17,148.16 × 8,238.08
4. Step 4: Simplify right side
   12,434.56x = 141,267,913.93
5. Step 5: Solve for x
   x = 141,267,913.93/12,434.56
6. Step 6: Final answer
   x = 11,360.91