Finding the Fourth Proportional to 12,591.69, 17,376.17 and 6,926.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,591.69 : 17,376.17 = 6,926.43 : x
2. Step 2: Convert to fraction form
   12,591.69/17,376.17 = 6,926.43/x
3. Step 3: Cross multiply
   12,591.69x = 17,376.17 × 6,926.43
4. Step 4: Simplify right side
   12,591.69x = 120,354,799.05
5. Step 5: Solve for x
   x = 120,354,799.05/12,591.69
6. Step 6: Final answer
   x = 9,558.28