Finding the Fourth Proportional to 11,754.09, 17,631.73 and 3,855.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,754.09 : 17,631.73 = 3,855.91 : x
2. Step 2: Convert to fraction form
   11,754.09/17,631.73 = 3,855.91/x
3. Step 3: Cross multiply
   11,754.09x = 17,631.73 × 3,855.91
4. Step 4: Simplify right side
   11,754.09x = 67,986,364.02
5. Step 5: Solve for x
   x = 67,986,364.02/11,754.09
6. Step 6: Final answer
   x = 5,784.06