Finding the Fourth Proportional to 10,290.67, 15,435.90 and 2,499.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.67 : 15,435.90 = 2,499.49 : x
2. Step 2: Convert to fraction form
   10,290.67/15,435.90 = 2,499.49/x
3. Step 3: Cross multiply
   10,290.67x = 15,435.90 × 2,499.49
4. Step 4: Simplify right side
   10,290.67x = 38,581,877.69
5. Step 5: Solve for x
   x = 38,581,877.69/10,290.67
6. Step 6: Final answer
   x = 3,749.21