Finding the Fourth Proportional to 12,871.99, 19,308.84 and 5,086.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,871.99 : 19,308.84 = 5,086.27 : x
2. Step 2: Convert to fraction form
   12,871.99/19,308.84 = 5,086.27/x
3. Step 3: Cross multiply
   12,871.99x = 19,308.84 × 5,086.27
4. Step 4: Simplify right side
   12,871.99x = 98,209,973.63
5. Step 5: Solve for x
   x = 98,209,973.63/12,871.99
6. Step 6: Final answer
   x = 7,629.74