Finding the Fourth Proportional to 9,947.10, 13,727.10 and 5,470.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.10 : 13,727.10 = 5,470.90 : x
2. Step 2: Convert to fraction form
   9,947.10/13,727.10 = 5,470.90/x
3. Step 3: Cross multiply
   9,947.10x = 13,727.10 × 5,470.90
4. Step 4: Simplify right side
   9,947.10x = 75,099,591.39
5. Step 5: Solve for x
   x = 75,099,591.39/9,947.10
6. Step 6: Final answer
   x = 7,549.90