Finding the Fourth Proportional to 9,164.12, 13,748.31 and 3,899.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,164.12 : 13,748.31 = 3,899.42 : x
2. Step 2: Convert to fraction form
   9,164.12/13,748.31 = 3,899.42/x
3. Step 3: Cross multiply
   9,164.12x = 13,748.31 × 3,899.42
4. Step 4: Simplify right side
   9,164.12x = 53,610,434.98
5. Step 5: Solve for x
   x = 53,610,434.98/9,164.12
6. Step 6: Final answer
   x = 5,850.04