Finding the Fourth Proportional to 13,068.43, 18,034.78 and 7,691.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,068.43 : 18,034.78 = 7,691.24 : x
2. Step 2: Convert to fraction form
   13,068.43/18,034.78 = 7,691.24/x
3. Step 3: Cross multiply
   13,068.43x = 18,034.78 × 7,691.24
4. Step 4: Simplify right side
   13,068.43x = 138,709,821.33
5. Step 5: Solve for x
   x = 138,709,821.33/13,068.43
6. Step 6: Final answer
   x = 10,614.12