Finding the Fourth Proportional to 10,490.88, 15,736.88 and 2,699.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,490.88 : 15,736.88 = 2,699.76 : x
2. Step 2: Convert to fraction form
   10,490.88/15,736.88 = 2,699.76/x
3. Step 3: Cross multiply
   10,490.88x = 15,736.88 × 2,699.76
4. Step 4: Simplify right side
   10,490.88x = 42,485,799.15
5. Step 5: Solve for x
   x = 42,485,799.15/10,490.88
6. Step 6: Final answer
   x = 4,049.78