Finding the Fourth Proportional to 12,741.30, 19,111.94 and 8,357.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,741.30 : 19,111.94 = 8,357.73 : x
2. Step 2: Convert to fraction form
   12,741.30/19,111.94 = 8,357.73/x
3. Step 3: Cross multiply
   12,741.30x = 19,111.94 × 8,357.73
4. Step 4: Simplify right side
   12,741.30x = 159,732,392.51
5. Step 5: Solve for x
   x = 159,732,392.51/12,741.30
6. Step 6: Final answer
   x = 12,536.59