Finding the Fourth Proportional to 8,070.58, 12,108.98 and 3,143.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,070.58 : 12,108.98 = 3,143.69 : x
2. Step 2: Convert to fraction form
   8,070.58/12,108.98 = 3,143.69/x
3. Step 3: Cross multiply
   8,070.58x = 12,108.98 × 3,143.69
4. Step 4: Simplify right side
   8,070.58x = 38,066,879.34
5. Step 5: Solve for x
   x = 38,066,879.34/8,070.58
6. Step 6: Final answer
   x = 4,716.75