Finding the Fourth Proportional to 3,699.82, 5,105.91 and 2,127.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.82 : 5,105.91 = 2,127.92 : x
2. Step 2: Convert to fraction form
   3,699.82/5,105.91 = 2,127.92/x
3. Step 3: Cross multiply
   3,699.82x = 5,105.91 × 2,127.92
4. Step 4: Simplify right side
   3,699.82x = 10,864,931.84
5. Step 5: Solve for x
   x = 10,864,931.84/3,699.82
6. Step 6: Final answer
   x = 2,936.61