Finding the Fourth Proportional to 9,091.46, 12,545.55 and 5,112.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,091.46 : 12,545.55 = 5,112.47 : x
2. Step 2: Convert to fraction form
   9,091.46/12,545.55 = 5,112.47/x
3. Step 3: Cross multiply
   9,091.46x = 12,545.55 × 5,112.47
4. Step 4: Simplify right side
   9,091.46x = 64,138,685.28
5. Step 5: Solve for x
   x = 64,138,685.28/9,091.46
6. Step 6: Final answer
   x = 7,054.83