Finding the Fourth Proportional to 13,968.56, 19,275.90 and 7,679.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,968.56 : 19,275.90 = 7,679.72 : x
2. Step 2: Convert to fraction form
   13,968.56/19,275.90 = 7,679.72/x
3. Step 3: Cross multiply
   13,968.56x = 19,275.90 × 7,679.72
4. Step 4: Simplify right side
   13,968.56x = 148,033,514.75
5. Step 5: Solve for x
   x = 148,033,514.75/13,968.56
6. Step 6: Final answer
   x = 10,597.62