Finding the Fourth Proportional to 10,290.29, 15,435.32 and 2,499.11

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.29 : 15,435.32 = 2,499.11 : x
2. Step 2: Convert to fraction form
   10,290.29/15,435.32 = 2,499.11/x
3. Step 3: Cross multiply
   10,290.29x = 15,435.32 × 2,499.11
4. Step 4: Simplify right side
   10,290.29x = 38,574,472.89
5. Step 5: Solve for x
   x = 38,574,472.89/10,290.29
6. Step 6: Final answer
   x = 3,748.63