Finding the Fourth Proportional to 9,272.88, 12,796.89 and 5,081.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,272.88 : 12,796.89 = 5,081.40 : x
2. Step 2: Convert to fraction form
   9,272.88/12,796.89 = 5,081.40/x
3. Step 3: Cross multiply
   9,272.88x = 12,796.89 × 5,081.40
4. Step 4: Simplify right side
   9,272.88x = 65,026,116.85
5. Step 5: Solve for x
   x = 65,026,116.85/9,272.88
6. Step 6: Final answer
   x = 7,012.50