Finding the Fourth Proportional to 10,490.67, 15,735.96 and 2,699.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,490.67 : 15,735.96 = 2,699.55 : x
2. Step 2: Convert to fraction form
   10,490.67/15,735.96 = 2,699.55/x
3. Step 3: Cross multiply
   10,490.67x = 15,735.96 × 2,699.55
4. Step 4: Simplify right side
   10,490.67x = 42,480,010.82
5. Step 5: Solve for x
   x = 42,480,010.82/10,490.67
6. Step 6: Final answer
   x = 4,049.31