Finding the Fourth Proportional to 9,691.89, 14,539.31 and 4,145.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,691.89 : 14,539.31 = 4,145.25 : x
2. Step 2: Convert to fraction form
   9,691.89/14,539.31 = 4,145.25/x
3. Step 3: Cross multiply
   9,691.89x = 14,539.31 × 4,145.25
4. Step 4: Simplify right side
   9,691.89x = 60,269,054.05
5. Step 5: Solve for x
   x = 60,269,054.05/9,691.89
6. Step 6: Final answer
   x = 6,218.50