Finding the Fourth Proportional to 9,057.39, 12,499.44 and 5,078.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,057.39 : 12,499.44 = 5,078.41 : x
2. Step 2: Convert to fraction form
   9,057.39/12,499.44 = 5,078.41/x
3. Step 3: Cross multiply
   9,057.39x = 12,499.44 × 5,078.41
4. Step 4: Simplify right side
   9,057.39x = 63,477,315.39
5. Step 5: Solve for x
   x = 63,477,315.39/9,057.39
6. Step 6: Final answer
   x = 7,008.35