Finding the Fourth Proportional to 9,120.22, 12,585.74 and 5,141.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,120.22 : 12,585.74 = 5,141.34 : x
2. Step 2: Convert to fraction form
   9,120.22/12,585.74 = 5,141.34/x
3. Step 3: Cross multiply
   9,120.22x = 12,585.74 × 5,141.34
4. Step 4: Simplify right side
   9,120.22x = 64,707,578.93
5. Step 5: Solve for x
   x = 64,707,578.93/9,120.22
6. Step 6: Final answer
   x = 7,094.95