Finding the Fourth Proportional to 6,391.72, 8,820.74 and 3,597.32

Step by Step Solution

1. Step 1: Write the proportion equation
   6,391.72 : 8,820.74 = 3,597.32 : x
2. Step 2: Convert to fraction form
   6,391.72/8,820.74 = 3,597.32/x
3. Step 3: Cross multiply
   6,391.72x = 8,820.74 × 3,597.32
4. Step 4: Simplify right side
   6,391.72x = 31,731,024.42
5. Step 5: Solve for x
   x = 31,731,024.42/6,391.72
6. Step 6: Final answer
   x = 4,964.40