Finding the Fourth Proportional to 9,386.40, 12,884.23 and 8,300.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.40 : 12,884.23 = 8,300.37 : x
2. Step 2: Convert to fraction form
   9,386.40/12,884.23 = 8,300.37/x
3. Step 3: Cross multiply
   9,386.40x = 12,884.23 × 8,300.37
4. Step 4: Simplify right side
   9,386.40x = 106,943,876.17
5. Step 5: Solve for x
   x = 106,943,876.17/9,386.40
6. Step 6: Final answer
   x = 11,393.49