Finding the Fourth Proportional to 8,085.72, 12,123.71 and 3,149.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,085.72 : 12,123.71 = 3,149.58 : x
2. Step 2: Convert to fraction form
   8,085.72/12,123.71 = 3,149.58/x
3. Step 3: Cross multiply
   8,085.72x = 12,123.71 × 3,149.58
4. Step 4: Simplify right side
   8,085.72x = 38,184,636.07
5. Step 5: Solve for x
   x = 38,184,636.07/8,085.72
6. Step 6: Final answer
   x = 4,722.48