Finding the Fourth Proportional to 8,300.12, 12,451.74 and 3,620.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.12 : 12,451.74 = 3,620.12 : x
2. Step 2: Convert to fraction form
   8,300.12/12,451.74 = 3,620.12/x
3. Step 3: Cross multiply
   8,300.12x = 12,451.74 × 3,620.12
4. Step 4: Simplify right side
   8,300.12x = 45,076,793.01
5. Step 5: Solve for x
   x = 45,076,793.01/8,300.12
6. Step 6: Final answer
   x = 5,430.86