Finding the Fourth Proportional to 9,009.59, 12,431.72 and 5,233.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,009.59 : 12,431.72 = 5,233.37 : x
2. Step 2: Convert to fraction form
   9,009.59/12,431.72 = 5,233.37/x
3. Step 3: Cross multiply
   9,009.59x = 12,431.72 × 5,233.37
4. Step 4: Simplify right side
   9,009.59x = 65,059,702.17
5. Step 5: Solve for x
   x = 65,059,702.17/9,009.59
6. Step 6: Final answer
   x = 7,221.17