Finding the Fourth Proportional to 11,915.93, 17,871.86 and 3,151.73

Step by Step Solution

1. Step 1: Write the proportion equation
   11,915.93 : 17,871.86 = 3,151.73 : x
2. Step 2: Convert to fraction form
   11,915.93/17,871.86 = 3,151.73/x
3. Step 3: Cross multiply
   11,915.93x = 17,871.86 × 3,151.73
4. Step 4: Simplify right side
   11,915.93x = 56,327,329.88
5. Step 5: Solve for x
   x = 56,327,329.88/11,915.93
6. Step 6: Final answer
   x = 4,727.06