Finding the Fourth Proportional to 17,679.32, 26,516.82 and 7,289.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,679.32 : 26,516.82 = 7,289.72 : x
2. Step 2: Convert to fraction form
   17,679.32/26,516.82 = 7,289.72/x
3. Step 3: Cross multiply
   17,679.32x = 26,516.82 × 7,289.72
4. Step 4: Simplify right side
   17,679.32x = 193,300,193.09
5. Step 5: Solve for x
   x = 193,300,193.09/17,679.32
6. Step 6: Final answer
   x = 10,933.69