Finding the Fourth Proportional to 9,146, 12,620.47 and 5,166.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146 : 12,620.47 = 5,166.27 : x
2. Step 2: Convert to fraction form
   9,146/12,620.47 = 5,166.27/x
3. Step 3: Cross multiply
   9,146x = 12,620.47 × 5,166.27
4. Step 4: Simplify right side
   9,146x = 65,200,755.55
5. Step 5: Solve for x
   x = 65,200,755.55/9,146
6. Step 6: Final answer
   x = 7,128.88