Finding the Fourth Proportional to 9,005.50, 12,427.76 and 5,230.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,005.50 : 12,427.76 = 5,230.76 : x
2. Step 2: Convert to fraction form
   9,005.50/12,427.76 = 5,230.76/x
3. Step 3: Cross multiply
   9,005.50x = 12,427.76 × 5,230.76
4. Step 4: Simplify right side
   9,005.50x = 65,006,629.90
5. Step 5: Solve for x
   x = 65,006,629.90/9,005.50
6. Step 6: Final answer
   x = 7,218.55