Finding the Fourth Proportional to 9,386.30, 12,952.73 and 5,611.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,386.30 : 12,952.73 = 5,611.57 : x
2. Step 2: Convert to fraction form
   9,386.30/12,952.73 = 5,611.57/x
3. Step 3: Cross multiply
   9,386.30x = 12,952.73 × 5,611.57
4. Step 4: Simplify right side
   9,386.30x = 72,685,132.73
5. Step 5: Solve for x
   x = 72,685,132.73/9,386.30
6. Step 6: Final answer
   x = 7,743.74