Finding the Fourth Proportional to 6,345.72, 8,757.24 and 3,693.60

Step by Step Solution

1. Step 1: Write the proportion equation
   6,345.72 : 8,757.24 = 3,693.60 : x
2. Step 2: Convert to fraction form
   6,345.72/8,757.24 = 3,693.60/x
3. Step 3: Cross multiply
   6,345.72x = 8,757.24 × 3,693.60
4. Step 4: Simplify right side
   6,345.72x = 32,345,741.66
5. Step 5: Solve for x
   x = 32,345,741.66/6,345.72
6. Step 6: Final answer
   x = 5,097.25