Finding the Fourth Proportional to 12,950.16, 19,427.20 and 5,158.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,950.16 : 19,427.20 = 5,158.56 : x
2. Step 2: Convert to fraction form
   12,950.16/19,427.20 = 5,158.56/x
3. Step 3: Cross multiply
   12,950.16x = 19,427.20 × 5,158.56
4. Step 4: Simplify right side
   12,950.16x = 100,216,376.83
5. Step 5: Solve for x
   x = 100,216,376.83/12,950.16
6. Step 6: Final answer
   x = 7,738.62