Finding the Fourth Proportional to 11,381.50, 17,079.96 and 3,986.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,381.50 : 17,079.96 = 3,986.02 : x
2. Step 2: Convert to fraction form
   11,381.50/17,079.96 = 3,986.02/x
3. Step 3: Cross multiply
   11,381.50x = 17,079.96 × 3,986.02
4. Step 4: Simplify right side
   11,381.50x = 68,080,976.76
5. Step 5: Solve for x
   x = 68,080,976.76/11,381.50
6. Step 6: Final answer
   x = 5,981.73