Finding the Fourth Proportional to 9,012.56, 12,436.49 and 5,235.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,012.56 : 12,436.49 = 5,235.63 : x
2. Step 2: Convert to fraction form
   9,012.56/12,436.49 = 5,235.63/x
3. Step 3: Cross multiply
   9,012.56x = 12,436.49 × 5,235.63
4. Step 4: Simplify right side
   9,012.56x = 65,112,833.96
5. Step 5: Solve for x
   x = 65,112,833.96/9,012.56
6. Step 6: Final answer
   x = 7,224.68