Finding the Fourth Proportional to 12,926.89, 19,393.37 and 4,161.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926.89 : 19,393.37 = 4,161.47 : x
2. Step 2: Convert to fraction form
   12,926.89/19,393.37 = 4,161.47/x
3. Step 3: Cross multiply
   12,926.89x = 19,393.37 × 4,161.47
4. Step 4: Simplify right side
   12,926.89x = 80,704,906.65
5. Step 5: Solve for x
   x = 80,704,906.65/12,926.89
6. Step 6: Final answer
   x = 6,243.18