Finding the Fourth Proportional to 8,426.32, 12,630.58 and 3,157.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,426.32 : 12,630.58 = 3,157.89 : x
2. Step 2: Convert to fraction form
   8,426.32/12,630.58 = 3,157.89/x
3. Step 3: Cross multiply
   8,426.32x = 12,630.58 × 3,157.89
4. Step 4: Simplify right side
   8,426.32x = 39,885,982.28
5. Step 5: Solve for x
   x = 39,885,982.28/8,426.32
6. Step 6: Final answer
   x = 4,733.50