Finding the Fourth Proportional to 8,072.30, 12,100.98 and 3,145.16

Step by Step Solution

1. Step 1: Write the proportion equation
   8,072.30 : 12,100.98 = 3,145.16 : x
2. Step 2: Convert to fraction form
   8,072.30/12,100.98 = 3,145.16/x
3. Step 3: Cross multiply
   8,072.30x = 12,100.98 × 3,145.16
4. Step 4: Simplify right side
   8,072.30x = 38,059,518.26
5. Step 5: Solve for x
   x = 38,059,518.26/8,072.30
6. Step 6: Final answer
   x = 4,714.83