Finding the Fourth Proportional to 3,810.73, 5,688.21 and 3,520.08

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.73 : 5,688.21 = 3,520.08 : x
2. Step 2: Convert to fraction form
   3,810.73/5,688.21 = 3,520.08/x
3. Step 3: Cross multiply
   3,810.73x = 5,688.21 × 3,520.08
4. Step 4: Simplify right side
   3,810.73x = 20,022,978.51
5. Step 5: Solve for x
   x = 20,022,978.51/3,810.73
6. Step 6: Final answer
   x = 5,254.36