Finding the Fourth Proportional to 9,249.90, 12,764.59 and 5,057.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,249.90 : 12,764.59 = 5,057.88 : x
2. Step 2: Convert to fraction form
   9,249.90/12,764.59 = 5,057.88/x
3. Step 3: Cross multiply
   9,249.90x = 12,764.59 × 5,057.88
4. Step 4: Simplify right side
   9,249.90x = 64,561,764.47
5. Step 5: Solve for x
   x = 64,561,764.47/9,249.90
6. Step 6: Final answer
   x = 6,979.73