Finding the Fourth Proportional to 3,881.21, 5,354.53 and 2,536.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,881.21 : 5,354.53 = 2,536.38 : x
2. Step 2: Convert to fraction form
   3,881.21/5,354.53 = 2,536.38/x
3. Step 3: Cross multiply
   3,881.21x = 5,354.53 × 2,536.38
4. Step 4: Simplify right side
   3,881.21x = 13,581,116.46
5. Step 5: Solve for x
   x = 13,581,116.46/3,881.21
6. Step 6: Final answer
   x = 3,499.20