Finding the Fourth Proportional to 12,693.69, 19,044.43 and 5,679.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,693.69 : 19,044.43 = 5,679.61 : x
2. Step 2: Convert to fraction form
   12,693.69/19,044.43 = 5,679.61/x
3. Step 3: Cross multiply
   12,693.69x = 19,044.43 × 5,679.61
4. Step 4: Simplify right side
   12,693.69x = 108,164,873.26
5. Step 5: Solve for x
   x = 108,164,873.26/12,693.69
6. Step 6: Final answer
   x = 8,521.15