Finding the Fourth Proportional to 11,728.02, 17,587.62 and 3,828.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,728.02 : 17,587.62 = 3,828.69 : x
2. Step 2: Convert to fraction form
   11,728.02/17,587.62 = 3,828.69/x
3. Step 3: Cross multiply
   11,728.02x = 17,587.62 × 3,828.69
4. Step 4: Simplify right side
   11,728.02x = 67,337,544.82
5. Step 5: Solve for x
   x = 67,337,544.82/11,728.02
6. Step 6: Final answer
   x = 5,741.60