Finding the Fourth Proportional to 12,935.44, 19,406.73 and 5,149.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,935.44 : 19,406.73 = 5,149.72 : x
2. Step 2: Convert to fraction form
   12,935.44/19,406.73 = 5,149.72/x
3. Step 3: Cross multiply
   12,935.44x = 19,406.73 × 5,149.72
4. Step 4: Simplify right side
   12,935.44x = 99,939,225.62
5. Step 5: Solve for x
   x = 99,939,225.62/12,935.44
6. Step 6: Final answer
   x = 7,726.00