Finding the Fourth Proportional to 9,513.09, 13,128.12 and 5,321.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,513.09 : 13,128.12 = 5,321.34 : x
2. Step 2: Convert to fraction form
   9,513.09/13,128.12 = 5,321.34/x
3. Step 3: Cross multiply
   9,513.09x = 13,128.12 × 5,321.34
4. Step 4: Simplify right side
   9,513.09x = 69,859,190.08
5. Step 5: Solve for x
   x = 69,859,190.08/9,513.09
6. Step 6: Final answer
   x = 7,343.48