Finding the Fourth Proportional to 9,120.07, 13,675.43 and 4,185.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.07 : 13,675.43 = 4,185.42 : x
2. Step 2: Convert to fraction form
   9,120.07/13,675.43 = 4,185.42/x
3. Step 3: Cross multiply
   9,120.07x = 13,675.43 × 4,185.42
4. Step 4: Simplify right side
   9,120.07x = 57,237,454.34
5. Step 5: Solve for x
   x = 57,237,454.34/9,120.07
6. Step 6: Final answer
   x = 6,275.99