Finding the Fourth Proportional to 10,290.42, 15,435.50 and 2,499.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,290.42 : 15,435.50 = 2,499.22 : x
2. Step 2: Convert to fraction form
   10,290.42/15,435.50 = 2,499.22/x
3. Step 3: Cross multiply
   10,290.42x = 15,435.50 × 2,499.22
4. Step 4: Simplify right side
   10,290.42x = 38,576,710.31
5. Step 5: Solve for x
   x = 38,576,710.31/10,290.42
6. Step 6: Final answer
   x = 3,748.80