Finding the Fourth Proportional to 8,140.52, 12,215.82 and 3,758.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,140.52 : 12,215.82 = 3,758.60 : x
2. Step 2: Convert to fraction form
   8,140.52/12,215.82 = 3,758.60/x
3. Step 3: Cross multiply
   8,140.52x = 12,215.82 × 3,758.60
4. Step 4: Simplify right side
   8,140.52x = 45,914,381.05
5. Step 5: Solve for x
   x = 45,914,381.05/8,140.52
6. Step 6: Final answer
   x = 5,640.23