Finding the Fourth Proportional to 6,474.05, 8,931.89 and 3,820.13

Step by Step Solution

1. Step 1: Write the proportion equation
   6,474.05 : 8,931.89 = 3,820.13 : x
2. Step 2: Convert to fraction form
   6,474.05/8,931.89 = 3,820.13/x
3. Step 3: Cross multiply
   6,474.05x = 8,931.89 × 3,820.13
4. Step 4: Simplify right side
   6,474.05x = 34,120,961.85
5. Step 5: Solve for x
   x = 34,120,961.85/6,474.05
6. Step 6: Final answer
   x = 5,270.42