Finding the Fourth Proportional to 6,345.21, 8,756.28 and 3,550.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,345.21 : 8,756.28 = 3,550.71 : x
2. Step 2: Convert to fraction form
   6,345.21/8,756.28 = 3,550.71/x
3. Step 3: Cross multiply
   6,345.21x = 8,756.28 × 3,550.71
4. Step 4: Simplify right side
   6,345.21x = 31,091,010.96
5. Step 5: Solve for x
   x = 31,091,010.96/6,345.21
6. Step 6: Final answer
   x = 4,899.92