Finding the Fourth Proportional to 11,973.80, 17,962.59 and 3,651.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,973.80 : 17,962.59 = 3,651.91 : x
2. Step 2: Convert to fraction form
   11,973.80/17,962.59 = 3,651.91/x
3. Step 3: Cross multiply
   11,973.80x = 17,962.59 × 3,651.91
4. Step 4: Simplify right side
   11,973.80x = 65,597,762.05
5. Step 5: Solve for x
   x = 65,597,762.05/11,973.80
6. Step 6: Final answer
   x = 5,478.44