Finding the Fourth Proportional to 5,644.05, 7,784.91 and 3,872.58

Step by Step Solution

1. Step 1: Write the proportion equation
   5,644.05 : 7,784.91 = 3,872.58 : x
2. Step 2: Convert to fraction form
   5,644.05/7,784.91 = 3,872.58/x
3. Step 3: Cross multiply
   5,644.05x = 7,784.91 × 3,872.58
4. Step 4: Simplify right side
   5,644.05x = 30,147,686.77
5. Step 5: Solve for x
   x = 30,147,686.77/5,644.05
6. Step 6: Final answer
   x = 5,341.50