Finding the Fourth Proportional to 5,606.42, 7,728.77 and 3,922.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,606.42 : 7,728.77 = 3,922.61 : x
2. Step 2: Convert to fraction form
   5,606.42/7,728.77 = 3,922.61/x
3. Step 3: Cross multiply
   5,606.42x = 7,728.77 × 3,922.61
4. Step 4: Simplify right side
   5,606.42x = 30,316,950.49
5. Step 5: Solve for x
   x = 30,316,950.49/5,606.42
6. Step 6: Final answer
   x = 5,407.54