Finding the Fourth Proportional to 10,091.62, 15,139.86 and 3,166.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,091.62 : 15,139.86 = 3,166.12 : x
2. Step 2: Convert to fraction form
   10,091.62/15,139.86 = 3,166.12/x
3. Step 3: Cross multiply
   10,091.62x = 15,139.86 × 3,166.12
4. Step 4: Simplify right side
   10,091.62x = 47,934,613.54
5. Step 5: Solve for x
   x = 47,934,613.54/10,091.62
6. Step 6: Final answer
   x = 4,749.94