Finding the Fourth Proportional to 9,111.75, 12,573.27 and 5,334.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.75 : 12,573.27 = 5,334.72 : x
2. Step 2: Convert to fraction form
   9,111.75/12,573.27 = 5,334.72/x
3. Step 3: Cross multiply
   9,111.75x = 12,573.27 × 5,334.72
4. Step 4: Simplify right side
   9,111.75x = 67,074,874.93
5. Step 5: Solve for x
   x = 67,074,874.93/9,111.75
6. Step 6: Final answer
   x = 7,361.36