Finding the Fourth Proportional to 12,937.46, 19,406.28 and 5,146.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,937.46 : 19,406.28 = 5,146.28 : x
2. Step 2: Convert to fraction form
   12,937.46/19,406.28 = 5,146.28/x
3. Step 3: Cross multiply
   12,937.46x = 19,406.28 × 5,146.28
4. Step 4: Simplify right side
   12,937.46x = 99,870,150.64
5. Step 5: Solve for x
   x = 99,870,150.64/12,937.46
6. Step 6: Final answer
   x = 7,719.46