Finding the Fourth Proportional to 7,155.06, 10,735.68 and 3,870.47

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.06 : 10,735.68 = 3,870.47 : x
2. Step 2: Convert to fraction form
   7,155.06/10,735.68 = 3,870.47/x
3. Step 3: Cross multiply
   7,155.06x = 10,735.68 × 3,870.47
4. Step 4: Simplify right side
   7,155.06x = 41,552,073.69
5. Step 5: Solve for x
   x = 41,552,073.69/7,155.06
6. Step 6: Final answer
   x = 5,807.37