Finding the Fourth Proportional to 3,699.72, 5,105.52 and 2,127.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,699.72 : 5,105.52 = 2,127.96 : x
2. Step 2: Convert to fraction form
   3,699.72/5,105.52 = 2,127.96/x
3. Step 3: Cross multiply
   3,699.72x = 5,105.52 × 2,127.96
4. Step 4: Simplify right side
   3,699.72x = 10,864,342.34
5. Step 5: Solve for x
   x = 10,864,342.34/3,699.72
6. Step 6: Final answer
   x = 2,936.53