Finding the Fourth Proportional to 8,070.85, 12,105.31 and 2,148.18

Step by Step Solution

1. Step 1: Write the proportion equation
   8,070.85 : 12,105.31 = 2,148.18 : x
2. Step 2: Convert to fraction form
   8,070.85/12,105.31 = 2,148.18/x
3. Step 3: Cross multiply
   8,070.85x = 12,105.31 × 2,148.18
4. Step 4: Simplify right side
   8,070.85x = 26,004,384.84
5. Step 5: Solve for x
   x = 26,004,384.84/8,070.85
6. Step 6: Final answer
   x = 3,222.01