Finding the Fourth Proportional to 9,573.64, 13,212.81 and 5,381.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,573.64 : 13,212.81 = 5,381.89 : x
2. Step 2: Convert to fraction form
   9,573.64/13,212.81 = 5,381.89/x
3. Step 3: Cross multiply
   9,573.64x = 13,212.81 × 5,381.89
4. Step 4: Simplify right side
   9,573.64x = 71,109,890.01
5. Step 5: Solve for x
   x = 71,109,890.01/9,573.64
6. Step 6: Final answer
   x = 7,427.68