Finding the Fourth Proportional to 3,688.07, 5,089.28 and 2,196.09

Step by Step Solution

1. Step 1: Write the proportion equation
   3,688.07 : 5,089.28 = 2,196.09 : x
2. Step 2: Convert to fraction form
   3,688.07/5,089.28 = 2,196.09/x
3. Step 3: Cross multiply
   3,688.07x = 5,089.28 × 2,196.09
4. Step 4: Simplify right side
   3,688.07x = 11,176,505.93
5. Step 5: Solve for x
   x = 11,176,505.93/3,688.07
6. Step 6: Final answer
   x = 3,030.45