Finding the Fourth Proportional to 7,947.88, 10,964.86 and 5,114.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,947.88 : 10,964.86 = 5,114.72 : x
2. Step 2: Convert to fraction form
   7,947.88/10,964.86 = 5,114.72/x
3. Step 3: Cross multiply
   7,947.88x = 10,964.86 × 5,114.72
4. Step 4: Simplify right side
   7,947.88x = 56,082,188.74
5. Step 5: Solve for x
   x = 56,082,188.74/7,947.88
6. Step 6: Final answer
   x = 7,056.25