Finding the Fourth Proportional to 12,681.50, 17,501.78 and 7,304.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,681.50 : 17,501.78 = 7,304.12 : x
2. Step 2: Convert to fraction form
   12,681.50/17,501.78 = 7,304.12/x
3. Step 3: Cross multiply
   12,681.50x = 17,501.78 × 7,304.12
4. Step 4: Simplify right side
   12,681.50x = 127,835,013.82
5. Step 5: Solve for x
   x = 127,835,013.82/12,681.50
6. Step 6: Final answer
   x = 10,080.43