Finding the Fourth Proportional to 9,340.56, 12,889.47 and 5,361.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.56 : 12,889.47 = 5,361.57 : x
2. Step 2: Convert to fraction form
   9,340.56/12,889.47 = 5,361.57/x
3. Step 3: Cross multiply
   9,340.56x = 12,889.47 × 5,361.57
4. Step 4: Simplify right side
   9,340.56x = 69,107,795.67
5. Step 5: Solve for x
   x = 69,107,795.67/9,340.56
6. Step 6: Final answer
   x = 7,398.68