Finding the Fourth Proportional to 11,929.55, 17,890.67 and 5,686.27

Step by Step Solution

1. Step 1: Write the proportion equation
   11,929.55 : 17,890.67 = 5,686.27 : x
2. Step 2: Convert to fraction form
   11,929.55/17,890.67 = 5,686.27/x
3. Step 3: Cross multiply
   11,929.55x = 17,890.67 × 5,686.27
4. Step 4: Simplify right side
   11,929.55x = 101,731,149.59
5. Step 5: Solve for x
   x = 101,731,149.59/11,929.55
6. Step 6: Final answer
   x = 8,527.66