Finding the Fourth Proportional to 5,587.29, 7,706.61 and 3,821.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,587.29 : 7,706.61 = 3,821.31 : x
2. Step 2: Convert to fraction form
   5,587.29/7,706.61 = 3,821.31/x
3. Step 3: Cross multiply
   5,587.29x = 7,706.61 × 3,821.31
4. Step 4: Simplify right side
   5,587.29x = 29,449,345.86
5. Step 5: Solve for x
   x = 29,449,345.86/5,587.29
6. Step 6: Final answer
   x = 5,270.77