Finding the Fourth Proportional to 10,290.48, 15,435.59 and 2,499.29

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.48 : 15,435.59 = 2,499.29 : x
2. Step 2: Convert to fraction form
   10,290.48/15,435.59 = 2,499.29/x
3. Step 3: Cross multiply
   10,290.48x = 15,435.59 × 2,499.29
4. Step 4: Simplify right side
   10,290.48x = 38,577,926.06
5. Step 5: Solve for x
   x = 38,577,926.06/10,290.48
6. Step 6: Final answer
   x = 3,748.89