Finding the Fourth Proportional to 3,887.82, 5,365.98 and 2,561.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.82 : 5,365.98 = 2,561.58 : x
2. Step 2: Convert to fraction form
   3,887.82/5,365.98 = 2,561.58/x
3. Step 3: Cross multiply
   3,887.82x = 5,365.98 × 2,561.58
4. Step 4: Simplify right side
   3,887.82x = 13,745,387.05
5. Step 5: Solve for x
   x = 13,745,387.05/3,887.82
6. Step 6: Final answer
   x = 3,535.50