Finding the Fourth Proportional to 30,947.06, 42,716.67 and 19,769.06

Step by Step Solution

1. Step 1: Write the proportion equation
   30,947.06 : 42,716.67 = 19,769.06 : x
2. Step 2: Convert to fraction form
   30,947.06/42,716.67 = 19,769.06/x
3. Step 3: Cross multiply
   30,947.06x = 42,716.67 × 19,769.06
4. Step 4: Simplify right side
   30,947.06x = 844,468,444.89
5. Step 5: Solve for x
   x = 844,468,444.89/30,947.06
6. Step 6: Final answer
   x = 27,287.52