Finding the Fourth Proportional to 12,939.77, 19,393.43 and 5,535.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,939.77 : 19,393.43 = 5,535.54 : x
2. Step 2: Convert to fraction form
   12,939.77/19,393.43 = 5,535.54/x
3. Step 3: Cross multiply
   12,939.77x = 19,393.43 × 5,535.54
4. Step 4: Simplify right side
   12,939.77x = 107,353,079.82
5. Step 5: Solve for x
   x = 107,353,079.82/12,939.77
6. Step 6: Final answer
   x = 8,296.37