Finding the Fourth Proportional to 8,426.62, 12,638.01 and 2,271.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,426.62 : 12,638.01 = 2,271.10 : x
2. Step 2: Convert to fraction form
   8,426.62/12,638.01 = 2,271.10/x
3. Step 3: Cross multiply
   8,426.62x = 12,638.01 × 2,271.10
4. Step 4: Simplify right side
   8,426.62x = 28,702,184.51
5. Step 5: Solve for x
   x = 28,702,184.51/8,426.62
6. Step 6: Final answer
   x = 3,406.13