Finding the Fourth Proportional to 4,111.56, 6,155.19 and 3,880.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,111.56 : 6,155.19 = 3,880.71 : x
2. Step 2: Convert to fraction form
   4,111.56/6,155.19 = 3,880.71/x
3. Step 3: Cross multiply
   4,111.56x = 6,155.19 × 3,880.71
4. Step 4: Simplify right side
   4,111.56x = 23,886,507.38
5. Step 5: Solve for x
   x = 23,886,507.38/4,111.56
6. Step 6: Final answer
   x = 5,809.60