Finding the Fourth Proportional to 6,389.52, 8,815.68 and 3,700.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,389.52 : 8,815.68 = 3,700.56 : x
2. Step 2: Convert to fraction form
   6,389.52/8,815.68 = 3,700.56/x
3. Step 3: Cross multiply
   6,389.52x = 8,815.68 × 3,700.56
4. Step 4: Simplify right side
   6,389.52x = 32,622,952.78
5. Step 5: Solve for x
   x = 32,622,952.78/6,389.52
6. Step 6: Final answer
   x = 5,105.70