Finding the Fourth Proportional to 8,085.52, 12,128.43 and 3,702.11

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.52 : 12,128.43 = 3,702.11 : x
2. Step 2: Convert to fraction form
   8,085.52/12,128.43 = 3,702.11/x
3. Step 3: Cross multiply
   8,085.52x = 12,128.43 × 3,702.11
4. Step 4: Simplify right side
   8,085.52x = 44,900,735.23
5. Step 5: Solve for x
   x = 44,900,735.23/8,085.52
6. Step 6: Final answer
   x = 5,553.23