Finding the Fourth Proportional to 6,422.57, 8,862.12 and 3,903.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,422.57 : 8,862.12 = 3,903.34 : x
2. Step 2: Convert to fraction form
   6,422.57/8,862.12 = 3,903.34/x
3. Step 3: Cross multiply
   6,422.57x = 8,862.12 × 3,903.34
4. Step 4: Simplify right side
   6,422.57x = 34,591,845.33
5. Step 5: Solve for x
   x = 34,591,845.33/6,422.57
6. Step 6: Final answer
   x = 5,385.98