Finding the Fourth Proportional to 8,300.56, 12,443.36 and 3,031.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,300.56 : 12,443.36 = 3,031.90 : x
2. Step 2: Convert to fraction form
   8,300.56/12,443.36 = 3,031.90/x
3. Step 3: Cross multiply
   8,300.56x = 12,443.36 × 3,031.90
4. Step 4: Simplify right side
   8,300.56x = 37,727,023.18
5. Step 5: Solve for x
   x = 37,727,023.18/8,300.56
6. Step 6: Final answer
   x = 4,545.12