Finding the Fourth Proportional to 11,882.88, 17,828.28 and 3,986.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,882.88 : 17,828.28 = 3,986.18 : x
2. Step 2: Convert to fraction form
   11,882.88/17,828.28 = 3,986.18/x
3. Step 3: Cross multiply
   11,882.88x = 17,828.28 × 3,986.18
4. Step 4: Simplify right side
   11,882.88x = 71,066,733.17
5. Step 5: Solve for x
   x = 71,066,733.17/11,882.88
6. Step 6: Final answer
   x = 5,980.60