Finding the Fourth Proportional to 9,013.16, 12,437.40 and 5,235.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,013.16 : 12,437.40 = 5,235.12 : x
2. Step 2: Convert to fraction form
   9,013.16/12,437.40 = 5,235.12/x
3. Step 3: Cross multiply
   9,013.16x = 12,437.40 × 5,235.12
4. Step 4: Simplify right side
   9,013.16x = 65,111,281.49
5. Step 5: Solve for x
   x = 65,111,281.49/9,013.16
6. Step 6: Final answer
   x = 7,224.02