Finding the Fourth Proportional to 9,256.88, 12,774.84 and 5,277.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,256.88 : 12,774.84 = 5,277.89 : x
2. Step 2: Convert to fraction form
   9,256.88/12,774.84 = 5,277.89/x
3. Step 3: Cross multiply
   9,256.88x = 12,774.84 × 5,277.89
4. Step 4: Simplify right side
   9,256.88x = 67,424,200.29
5. Step 5: Solve for x
   x = 67,424,200.29/9,256.88
6. Step 6: Final answer
   x = 7,283.69