Finding the Fourth Proportional to 9,212.51, 12,717.94 and 5,436.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,212.51 : 12,717.94 = 5,436.82 : x
2. Step 2: Convert to fraction form
   9,212.51/12,717.94 = 5,436.82/x
3. Step 3: Cross multiply
   9,212.51x = 12,717.94 × 5,436.82
4. Step 4: Simplify right side
   9,212.51x = 69,145,147.76
5. Step 5: Solve for x
   x = 69,145,147.76/9,212.51
6. Step 6: Final answer
   x = 7,505.57