Finding the Fourth Proportional to 12,959.50, 19,415.76 and 5,945.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,959.50 : 19,415.76 = 5,945.39 : x
2. Step 2: Convert to fraction form
   12,959.50/19,415.76 = 5,945.39/x
3. Step 3: Cross multiply
   12,959.50x = 19,415.76 × 5,945.39
4. Step 4: Simplify right side
   12,959.50x = 115,434,265.35
5. Step 5: Solve for x
   x = 115,434,265.35/12,959.50
6. Step 6: Final answer
   x = 8,907.31