Finding the Fourth Proportional to 9,253.29, 12,772.80 and 5,477.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,253.29 : 12,772.80 = 5,477.78 : x
2. Step 2: Convert to fraction form
   9,253.29/12,772.80 = 5,477.78/x
3. Step 3: Cross multiply
   9,253.29x = 12,772.80 × 5,477.78
4. Step 4: Simplify right side
   9,253.29x = 69,966,524.52
5. Step 5: Solve for x
   x = 69,966,524.52/9,253.29
6. Step 6: Final answer
   x = 7,561.26