Finding the Fourth Proportional to 9,333.88, 12,880.72 and 5,085.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,333.88 : 12,880.72 = 5,085.18 : x
2. Step 2: Convert to fraction form
   9,333.88/12,880.72 = 5,085.18/x
3. Step 3: Cross multiply
   9,333.88x = 12,880.72 × 5,085.18
4. Step 4: Simplify right side
   9,333.88x = 65,500,779.73
5. Step 5: Solve for x
   x = 65,500,779.73/9,333.88
6. Step 6: Final answer
   x = 7,017.53