Finding the Fourth Proportional to 11,642.76, 17,469.29 and 3,851.57

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.76 : 17,469.29 = 3,851.57 : x
2. Step 2: Convert to fraction form
   11,642.76/17,469.29 = 3,851.57/x
3. Step 3: Cross multiply
   11,642.76x = 17,469.29 × 3,851.57
4. Step 4: Simplify right side
   11,642.76x = 67,284,246.59
5. Step 5: Solve for x
   x = 67,284,246.59/11,642.76
6. Step 6: Final answer
   x = 5,779.06