Finding the Fourth Proportional to 9,091.31, 12,568.37 and 9,008.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.31 : 12,568.37 = 9,008.15 : x
2. Step 2: Convert to fraction form
   9,091.31/12,568.37 = 9,008.15/x
3. Step 3: Cross multiply
   9,091.31x = 12,568.37 × 9,008.15
4. Step 4: Simplify right side
   9,091.31x = 113,217,654.33
5. Step 5: Solve for x
   x = 113,217,654.33/9,091.31
6. Step 6: Final answer
   x = 12,453.40