Finding the Fourth Proportional to 9,420.89, 14,134.42 and 3,876.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,420.89 : 14,134.42 = 3,876.85 : x
2. Step 2: Convert to fraction form
   9,420.89/14,134.42 = 3,876.85/x
3. Step 3: Cross multiply
   9,420.89x = 14,134.42 × 3,876.85
4. Step 4: Simplify right side
   9,420.89x = 54,797,026.18
5. Step 5: Solve for x
   x = 54,797,026.18/9,420.89
6. Step 6: Final answer
   x = 5,816.54