Finding the Fourth Proportional to 12,694.77, 19,031.88 and 5,304.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,694.77 : 19,031.88 = 5,304.78 : x
2. Step 2: Convert to fraction form
   12,694.77/19,031.88 = 5,304.78/x
3. Step 3: Cross multiply
   12,694.77x = 19,031.88 × 5,304.78
4. Step 4: Simplify right side
   12,694.77x = 100,959,936.39
5. Step 5: Solve for x
   x = 100,959,936.39/12,694.77
6. Step 6: Final answer
   x = 7,952.88