Finding the Fourth Proportional to 12,961.50, 19,418.76 and 5,947.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,961.50 : 19,418.76 = 5,947.39 : x
2. Step 2: Convert to fraction form
   12,961.50/19,418.76 = 5,947.39/x
3. Step 3: Cross multiply
   12,961.50x = 19,418.76 × 5,947.39
4. Step 4: Simplify right side
   12,961.50x = 115,490,939.04
5. Step 5: Solve for x
   x = 115,490,939.04/12,961.50
6. Step 6: Final answer
   x = 8,910.31