Finding the Fourth Proportional to 9,111.88, 12,573.44 and 5,334.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.88 : 12,573.44 = 5,334.85 : x
2. Step 2: Convert to fraction form
   9,111.88/12,573.44 = 5,334.85/x
3. Step 3: Cross multiply
   9,111.88x = 12,573.44 × 5,334.85
4. Step 4: Simplify right side
   9,111.88x = 67,077,353.52
5. Step 5: Solve for x
   x = 67,077,353.52/9,111.88
6. Step 6: Final answer
   x = 7,361.53