Finding the Fourth Proportional to 3,688.72, 5,084.67 and 2,507.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.72 : 5,084.67 = 2,507.74 : x
2. Step 2: Convert to fraction form
   3,688.72/5,084.67 = 2,507.74/x
3. Step 3: Cross multiply
   3,688.72x = 5,084.67 × 2,507.74
4. Step 4: Simplify right side
   3,688.72x = 12,751,030.35
5. Step 5: Solve for x
   x = 12,751,030.35/3,688.72
6. Step 6: Final answer
   x = 3,456.76