Finding the Fourth Proportional to 9,300.21, 12,834.33 and 5,321.37

Step by Step Solution

1. Step 1: Write the proportion equation
   9,300.21 : 12,834.33 = 5,321.37 : x
2. Step 2: Convert to fraction form
   9,300.21/12,834.33 = 5,321.37/x
3. Step 3: Cross multiply
   9,300.21x = 12,834.33 × 5,321.37
4. Step 4: Simplify right side
   9,300.21x = 68,296,218.63
5. Step 5: Solve for x
   x = 68,296,218.63/9,300.21
6. Step 6: Final answer
   x = 7,343.51