Finding the Fourth Proportional to 39,019.42, 58,535.25 and 12,718.09

Step by Step Solution

1. Step 1: Write the proportion equation
   39,019.42 : 58,535.25 = 12,718.09 : x
2. Step 2: Convert to fraction form
   39,019.42/58,535.25 = 12,718.09/x
3. Step 3: Cross multiply
   39,019.42x = 58,535.25 × 12,718.09
4. Step 4: Simplify right side
   39,019.42x = 744,456,577.67
5. Step 5: Solve for x
   x = 744,456,577.67/39,019.42
6. Step 6: Final answer
   x = 19,079.13