Finding the Fourth Proportional to 11,866.53, 17,801.94 and 3,968.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,866.53 : 17,801.94 = 3,968.30 : x
2. Step 2: Convert to fraction form
   11,866.53/17,801.94 = 3,968.30/x
3. Step 3: Cross multiply
   11,866.53x = 17,801.94 × 3,968.30
4. Step 4: Simplify right side
   11,866.53x = 70,643,349.49
5. Step 5: Solve for x
   x = 70,643,349.49/11,866.53
6. Step 6: Final answer
   x = 5,953.16