Finding the Fourth Proportional to 12,981.82, 17,914.89 and 7,013.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,981.82 : 17,914.89 = 7,013.47 : x
2. Step 2: Convert to fraction form
   12,981.82/17,914.89 = 7,013.47/x
3. Step 3: Cross multiply
   12,981.82x = 17,914.89 × 7,013.47
4. Step 4: Simplify right side
   12,981.82x = 125,645,519.22
5. Step 5: Solve for x
   x = 125,645,519.22/12,981.82
6. Step 6: Final answer
   x = 9,678.58