Finding the Fourth Proportional to 3,806.76, 5,696.29 and 3,142.45

Step by Step Solution

1. Step 1: Write the proportion equation
   3,806.76 : 5,696.29 = 3,142.45 : x
2. Step 2: Convert to fraction form
   3,806.76/5,696.29 = 3,142.45/x
3. Step 3: Cross multiply
   3,806.76x = 5,696.29 × 3,142.45
4. Step 4: Simplify right side
   3,806.76x = 17,900,306.51
5. Step 5: Solve for x
   x = 17,900,306.51/3,806.76
6. Step 6: Final answer
   x = 4,702.25