Finding the Fourth Proportional to 12,160.09, 16,778.37 and 7,382.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,160.09 : 16,778.37 = 7,382.55 : x
2. Step 2: Convert to fraction form
   12,160.09/16,778.37 = 7,382.55/x
3. Step 3: Cross multiply
   12,160.09x = 16,778.37 × 7,382.55
4. Step 4: Simplify right side
   12,160.09x = 123,867,071.55
5. Step 5: Solve for x
   x = 123,867,071.55/12,160.09
6. Step 6: Final answer
   x = 10,186.37