Finding the Fourth Proportional to 9,091.30, 12,545.92 and 5,112.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.30 : 12,545.92 = 5,112.33 : x
2. Step 2: Convert to fraction form
   9,091.30/12,545.92 = 5,112.33/x
3. Step 3: Cross multiply
   9,091.30x = 12,545.92 × 5,112.33
4. Step 4: Simplify right side
   9,091.30x = 64,138,794.90
5. Step 5: Solve for x
   x = 64,138,794.90/9,091.30
6. Step 6: Final answer
   x = 7,054.96