Finding the Fourth Proportional to 12,090.42, 16,686 and 7,377.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,090.42 : 16,686 = 7,377.48 : x
2. Step 2: Convert to fraction form
   12,090.42/16,686 = 7,377.48/x
3. Step 3: Cross multiply
   12,090.42x = 16,686 × 7,377.48
4. Step 4: Simplify right side
   12,090.42x = 123,100,631.28
5. Step 5: Solve for x
   x = 123,100,631.28/12,090.42
6. Step 6: Final answer
   x = 10,181.67