Finding the Fourth Proportional to 9,146.44, 12,620.61 and 5,167.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.44 : 12,620.61 = 5,167.02 : x
2. Step 2: Convert to fraction form
   9,146.44/12,620.61 = 5,167.02/x
3. Step 3: Cross multiply
   9,146.44x = 12,620.61 × 5,167.02
4. Step 4: Simplify right side
   9,146.44x = 65,210,944.28
5. Step 5: Solve for x
   x = 65,210,944.28/9,146.44
6. Step 6: Final answer
   x = 7,129.65