Finding the Fourth Proportional to 55,147.40, 82,680.77 and 17,686.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,147.40 : 82,680.77 = 17,686.15 : x
2. Step 2: Convert to fraction form
   55,147.40/82,680.77 = 17,686.15/x
3. Step 3: Cross multiply
   55,147.40x = 82,680.77 × 17,686.15
4. Step 4: Simplify right side
   55,147.40x = 1,462,304,500.34
5. Step 5: Solve for x
   x = 1,462,304,500.34/55,147.40
6. Step 6: Final answer
   x = 26,516.29