Finding the Fourth Proportional to 10,158.14, 14,018.54 and 5,681.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.14 : 14,018.54 = 5,681.79 : x
2. Step 2: Convert to fraction form
   10,158.14/14,018.54 = 5,681.79/x
3. Step 3: Cross multiply
   10,158.14x = 14,018.54 × 5,681.79
4. Step 4: Simplify right side
   10,158.14x = 79,650,371.98
5. Step 5: Solve for x
   x = 79,650,371.98/10,158.14
6. Step 6: Final answer
   x = 7,841.04