Finding the Fourth Proportional to 16,782.39, 25,157.87 and 5,681.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,782.39 : 25,157.87 = 5,681.31 : x
2. Step 2: Convert to fraction form
   16,782.39/25,157.87 = 5,681.31/x
3. Step 3: Cross multiply
   16,782.39x = 25,157.87 × 5,681.31
4. Step 4: Simplify right side
   16,782.39x = 142,929,630.00
5. Step 5: Solve for x
   x = 142,929,630.00/16,782.39
6. Step 6: Final answer
   x = 8,516.64