Finding the Fourth Proportional to 6,919.30, 10,381.55 and 4,147.95

Step by Step Solution

1. Step 1: Write the proportion equation
   6,919.30 : 10,381.55 = 4,147.95 : x
2. Step 2: Convert to fraction form
   6,919.30/10,381.55 = 4,147.95/x
3. Step 3: Cross multiply
   6,919.30x = 10,381.55 × 4,147.95
4. Step 4: Simplify right side
   6,919.30x = 43,062,150.32
5. Step 5: Solve for x
   x = 43,062,150.32/6,919.30
6. Step 6: Final answer
   x = 6,223.48