Finding the Fourth Proportional to 5,909.05, 8,157.89 and 3,922.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,909.05 : 8,157.89 = 3,922.30 : x
2. Step 2: Convert to fraction form
   5,909.05/8,157.89 = 3,922.30/x
3. Step 3: Cross multiply
   5,909.05x = 8,157.89 × 3,922.30
4. Step 4: Simplify right side
   5,909.05x = 31,997,691.95
5. Step 5: Solve for x
   x = 31,997,691.95/5,909.05
6. Step 6: Final answer
   x = 5,415.03