Finding the Fourth Proportional to 9,339.33, 12,887.49 and 5,359.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,339.33 : 12,887.49 = 5,359.60 : x
2. Step 2: Convert to fraction form
   9,339.33/12,887.49 = 5,359.60/x
3. Step 3: Cross multiply
   9,339.33x = 12,887.49 × 5,359.60
4. Step 4: Simplify right side
   9,339.33x = 69,071,791.40
5. Step 5: Solve for x
   x = 69,071,791.40/9,339.33
6. Step 6: Final answer
   x = 7,395.80