Finding the Fourth Proportional to 10,157.81, 14,017.82 and 5,681.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,157.81 : 14,017.82 = 5,681.28 : x
2. Step 2: Convert to fraction form
   10,157.81/14,017.82 = 5,681.28/x
3. Step 3: Cross multiply
   10,157.81x = 14,017.82 × 5,681.28
4. Step 4: Simplify right side
   10,157.81x = 79,639,090.00
5. Step 5: Solve for x
   x = 79,639,090.00/10,157.81
6. Step 6: Final answer
   x = 7,840.18