Finding the Fourth Proportional to 9,255.30, 12,772.61 and 5,063.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,255.30 : 12,772.61 = 5,063.55 : x
2. Step 2: Convert to fraction form
   9,255.30/12,772.61 = 5,063.55/x
3. Step 3: Cross multiply
   9,255.30x = 12,772.61 × 5,063.55
4. Step 4: Simplify right side
   9,255.30x = 64,674,749.37
5. Step 5: Solve for x
   x = 64,674,749.37/9,255.30
6. Step 6: Final answer
   x = 6,987.86