Finding the Fourth Proportional to 6,137.47, 8,470.29 and 3,620.40

Step by Step Solution

1. Step 1: Write the proportion equation
   6,137.47 : 8,470.29 = 3,620.40 : x
2. Step 2: Convert to fraction form
   6,137.47/8,470.29 = 3,620.40/x
3. Step 3: Cross multiply
   6,137.47x = 8,470.29 × 3,620.40
4. Step 4: Simplify right side
   6,137.47x = 30,665,837.92
5. Step 5: Solve for x
   x = 30,665,837.92/6,137.47
6. Step 6: Final answer
   x = 4,996.49