Finding the Fourth Proportional to 9,250.78, 12,765.81 and 5,058.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,250.78 : 12,765.81 = 5,058.94 : x
2. Step 2: Convert to fraction form
   9,250.78/12,765.81 = 5,058.94/x
3. Step 3: Cross multiply
   9,250.78x = 12,765.81 × 5,058.94
4. Step 4: Simplify right side
   9,250.78x = 64,581,453.90
5. Step 5: Solve for x
   x = 64,581,453.90/9,250.78
6. Step 6: Final answer
   x = 6,981.19