Finding the Fourth Proportional to 9,573.50, 13,211.30 and 5,381.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,573.50 : 13,211.30 = 5,381.76 : x
2. Step 2: Convert to fraction form
   9,573.50/13,211.30 = 5,381.76/x
3. Step 3: Cross multiply
   9,573.50x = 13,211.30 × 5,381.76
4. Step 4: Simplify right side
   9,573.50x = 71,100,045.89
5. Step 5: Solve for x
   x = 71,100,045.89/9,573.50
6. Step 6: Final answer
   x = 7,426.76