Finding the Fourth Proportional to 3,663.96, 5,056.20 and 2,091.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.96 : 5,056.20 = 2,091.76 : x
2. Step 2: Convert to fraction form
   3,663.96/5,056.20 = 2,091.76/x
3. Step 3: Cross multiply
   3,663.96x = 5,056.20 × 2,091.76
4. Step 4: Simplify right side
   3,663.96x = 10,576,356.91
5. Step 5: Solve for x
   x = 10,576,356.91/3,663.96
6. Step 6: Final answer
   x = 2,886.59