Finding the Fourth Proportional to 9,417.89, 14,131.42 and 3,872.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,417.89 : 14,131.42 = 3,872.90 : x
2. Step 2: Convert to fraction form
   9,417.89/14,131.42 = 3,872.90/x
3. Step 3: Cross multiply
   9,417.89x = 14,131.42 × 3,872.90
4. Step 4: Simplify right side
   9,417.89x = 54,729,486.50
5. Step 5: Solve for x
   x = 54,729,486.50/9,417.89
6. Step 6: Final answer
   x = 5,811.23