Finding the Fourth Proportional to 11,774.86, 17,665.62 and 3,984.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,774.86 : 17,665.62 = 3,984.28 : x
2. Step 2: Convert to fraction form
   11,774.86/17,665.62 = 3,984.28/x
3. Step 3: Cross multiply
   11,774.86x = 17,665.62 × 3,984.28
4. Step 4: Simplify right side
   11,774.86x = 70,384,776.45
5. Step 5: Solve for x
   x = 70,384,776.45/11,774.86
6. Step 6: Final answer
   x = 5,977.55