Finding the Fourth Proportional to 6,838.72, 9,434.72 and 4,043.20

Step by Step Solution

1. Step 1: Write the proportion equation
   6,838.72 : 9,434.72 = 4,043.20 : x
2. Step 2: Convert to fraction form
   6,838.72/9,434.72 = 4,043.20/x
3. Step 3: Cross multiply
   6,838.72x = 9,434.72 × 4,043.20
4. Step 4: Simplify right side
   6,838.72x = 38,146,459.90
5. Step 5: Solve for x
   x = 38,146,459.90/6,838.72
6. Step 6: Final answer
   x = 5,578.01