Finding the Fourth Proportional to 7,936.86, 10,947.90 and 5,107.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,936.86 : 10,947.90 = 5,107.91 : x
2. Step 2: Convert to fraction form
   7,936.86/10,947.90 = 5,107.91/x
3. Step 3: Cross multiply
   7,936.86x = 10,947.90 × 5,107.91
4. Step 4: Simplify right side
   7,936.86x = 55,920,887.89
5. Step 5: Solve for x
   x = 55,920,887.89/7,936.86
6. Step 6: Final answer
   x = 7,045.72