Finding the Fourth Proportional to 6,126.80, 8,453.67 and 3,607.99

Step by Step Solution

1. Step 1: Write the proportion equation
   6,126.80 : 8,453.67 = 3,607.99 : x
2. Step 2: Convert to fraction form
   6,126.80/8,453.67 = 3,607.99/x
3. Step 3: Cross multiply
   6,126.80x = 8,453.67 × 3,607.99
4. Step 4: Simplify right side
   6,126.80x = 30,500,714.55
5. Step 5: Solve for x
   x = 30,500,714.55/6,126.80
6. Step 6: Final answer
   x = 4,978.25