Finding the Fourth Proportional to 11,336.25, 17,005.34 and 3,128.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,336.25 : 17,005.34 = 3,128.25 : x
2. Step 2: Convert to fraction form
   11,336.25/17,005.34 = 3,128.25/x
3. Step 3: Cross multiply
   11,336.25x = 17,005.34 × 3,128.25
4. Step 4: Simplify right side
   11,336.25x = 53,196,939.21
5. Step 5: Solve for x
   x = 53,196,939.21/11,336.25
6. Step 6: Final answer
   x = 4,692.64