Finding the Fourth Proportional to 3,663.72, 5,056.20 and 2,091.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.72 : 5,056.20 = 2,091.96 : x
2. Step 2: Convert to fraction form
   3,663.72/5,056.20 = 2,091.96/x
3. Step 3: Cross multiply
   3,663.72x = 5,056.20 × 2,091.96
4. Step 4: Simplify right side
   3,663.72x = 10,577,368.15
5. Step 5: Solve for x
   x = 10,577,368.15/3,663.72
6. Step 6: Final answer
   x = 2,887.06