Finding the Fourth Proportional to 12,164.09, 16,783.90 and 7,386.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,164.09 : 16,783.90 = 7,386.55 : x
2. Step 2: Convert to fraction form
   12,164.09/16,783.90 = 7,386.55/x
3. Step 3: Cross multiply
   12,164.09x = 16,783.90 × 7,386.55
4. Step 4: Simplify right side
   12,164.09x = 123,975,056.12
5. Step 5: Solve for x
   x = 123,975,056.12/12,164.09
6. Step 6: Final answer
   x = 10,191.89