Finding the Fourth Proportional to 13,012.80, 19,516.27 and 5,986.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,012.80 : 19,516.27 = 5,986.06 : x
2. Step 2: Convert to fraction form
   13,012.80/19,516.27 = 5,986.06/x
3. Step 3: Cross multiply
   13,012.80x = 19,516.27 × 5,986.06
4. Step 4: Simplify right side
   13,012.80x = 116,825,563.20
5. Step 5: Solve for x
   x = 116,825,563.20/13,012.80
6. Step 6: Final answer
   x = 8,977.75