Finding the Fourth Proportional to 7,155.56, 10,736.43 and 3,870.97

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.56 : 10,736.43 = 3,870.97 : x
2. Step 2: Convert to fraction form
   7,155.56/10,736.43 = 3,870.97/x
3. Step 3: Cross multiply
   7,155.56x = 10,736.43 × 3,870.97
4. Step 4: Simplify right side
   7,155.56x = 41,560,344.75
5. Step 5: Solve for x
   x = 41,560,344.75/7,155.56
6. Step 6: Final answer
   x = 5,808.12