Finding the Fourth Proportional to 9,338.31, 12,886.72 and 5,359.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,338.31 : 12,886.72 = 5,359.33 : x
2. Step 2: Convert to fraction form
   9,338.31/12,886.72 = 5,359.33/x
3. Step 3: Cross multiply
   9,338.31x = 12,886.72 × 5,359.33
4. Step 4: Simplify right side
   9,338.31x = 69,064,185.10
5. Step 5: Solve for x
   x = 69,064,185.10/9,338.31
6. Step 6: Final answer
   x = 7,395.79