Finding the Fourth Proportional to 12,981.06, 17,913.66 and 7,315.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,981.06 : 17,913.66 = 7,315.82 : x
2. Step 2: Convert to fraction form
   12,981.06/17,913.66 = 7,315.82/x
3. Step 3: Cross multiply
   12,981.06x = 17,913.66 × 7,315.82
4. Step 4: Simplify right side
   12,981.06x = 131,053,062.27
5. Step 5: Solve for x
   x = 131,053,062.27/12,981.06
6. Step 6: Final answer
   x = 10,095.71