Finding the Fourth Proportional to 17,945.51, 24,770.39 and 12,278.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,945.51 : 24,770.39 = 12,278.12 : x
2. Step 2: Convert to fraction form
   17,945.51/24,770.39 = 12,278.12/x
3. Step 3: Cross multiply
   17,945.51x = 24,770.39 × 12,278.12
4. Step 4: Simplify right side
   17,945.51x = 304,133,635.62
5. Step 5: Solve for x
   x = 304,133,635.62/17,945.51
6. Step 6: Final answer
   x = 16,947.62