Finding the Fourth Proportional to 9,146.04, 12,620.79 and 5,167.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,146.04 : 12,620.79 = 5,167.50 : x
2. Step 2: Convert to fraction form
   9,146.04/12,620.79 = 5,167.50/x
3. Step 3: Cross multiply
   9,146.04x = 12,620.79 × 5,167.50
4. Step 4: Simplify right side
   9,146.04x = 65,217,932.33
5. Step 5: Solve for x
   x = 65,217,932.33/9,146.04
6. Step 6: Final answer
   x = 7,130.73