Finding the Fourth Proportional to 10,091.73, 15,139.21 and 3,851.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,091.73 : 15,139.21 = 3,851.49 : x
2. Step 2: Convert to fraction form
   10,091.73/15,139.21 = 3,851.49/x
3. Step 3: Cross multiply
   10,091.73x = 15,139.21 × 3,851.49
4. Step 4: Simplify right side
   10,091.73x = 58,308,515.92
5. Step 5: Solve for x
   x = 58,308,515.92/10,091.73
6. Step 6: Final answer
   x = 5,777.85