Finding the Fourth Proportional to 9,013.77, 12,435.17 and 5,235.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,013.77 : 12,435.17 = 5,235.72 : x
2. Step 2: Convert to fraction form
   9,013.77/12,435.17 = 5,235.72/x
3. Step 3: Cross multiply
   9,013.77x = 12,435.17 × 5,235.72
4. Step 4: Simplify right side
   9,013.77x = 65,107,042.09
5. Step 5: Solve for x
   x = 65,107,042.09/9,013.77
6. Step 6: Final answer
   x = 7,223.06