Finding the Fourth Proportional to 10,456.98, 15,681.38 and 3,791.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,456.98 : 15,681.38 = 3,791.89 : x
2. Step 2: Convert to fraction form
   10,456.98/15,681.38 = 3,791.89/x
3. Step 3: Cross multiply
   10,456.98x = 15,681.38 × 3,791.89
4. Step 4: Simplify right side
   10,456.98x = 59,462,049.05
5. Step 5: Solve for x
   x = 59,462,049.05/10,456.98
6. Step 6: Final answer
   x = 5,686.35