Finding the Fourth Proportional to 9,179.15, 12,666.98 and 5,200.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.15 : 12,666.98 = 5,200.16 : x
2. Step 2: Convert to fraction form
   9,179.15/12,666.98 = 5,200.16/x
3. Step 3: Cross multiply
   9,179.15x = 12,666.98 × 5,200.16
4. Step 4: Simplify right side
   9,179.15x = 65,870,272.38
5. Step 5: Solve for x
   x = 65,870,272.38/9,179.15
6. Step 6: Final answer
   x = 7,176.08