Finding the Fourth Proportional to 12,308.34, 18,451.14 and 4,911

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.34 : 18,451.14 = 4,911 : x
2. Step 2: Convert to fraction form
   12,308.34/18,451.14 = 4,911/x
3. Step 3: Cross multiply
   12,308.34x = 18,451.14 × 4,911
4. Step 4: Simplify right side
   12,308.34x = 90,613,548.54
5. Step 5: Solve for x
   x = 90,613,548.54/12,308.34
6. Step 6: Final answer
   x = 7,361.96