Finding the Fourth Proportional to 11,782.53, 17,662.86 and 3,986.01

Step by Step Solution

1. Step 1: Write the proportion equation
   11,782.53 : 17,662.86 = 3,986.01 : x
2. Step 2: Convert to fraction form
   11,782.53/17,662.86 = 3,986.01/x
3. Step 3: Cross multiply
   11,782.53x = 17,662.86 × 3,986.01
4. Step 4: Simplify right side
   11,782.53x = 70,404,336.59
5. Step 5: Solve for x
   x = 70,404,336.59/11,782.53
6. Step 6: Final answer
   x = 5,975.32