Finding the Fourth Proportional to 5,591.02, 8,390.55 and 2,081.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,591.02 : 8,390.55 = 2,081.51 : x
2. Step 2: Convert to fraction form
   5,591.02/8,390.55 = 2,081.51/x
3. Step 3: Cross multiply
   5,591.02x = 8,390.55 × 2,081.51
4. Step 4: Simplify right side
   5,591.02x = 17,465,042.51
5. Step 5: Solve for x
   x = 17,465,042.51/5,591.02
6. Step 6: Final answer
   x = 3,123.77