Finding the Fourth Proportional to 6,440.68, 8,887.89 and 3,607.48

Step by Step Solution

1. Step 1: Write the proportion equation
   6,440.68 : 8,887.89 = 3,607.48 : x
2. Step 2: Convert to fraction form
   6,440.68/8,887.89 = 3,607.48/x
3. Step 3: Cross multiply
   6,440.68x = 8,887.89 × 3,607.48
4. Step 4: Simplify right side
   6,440.68x = 32,062,885.42
5. Step 5: Solve for x
   x = 32,062,885.42/6,440.68
6. Step 6: Final answer
   x = 4,978.18