Finding the Fourth Proportional to 9,436.56, 13,022.70 and 5,187.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.56 : 13,022.70 = 5,187.60 : x
2. Step 2: Convert to fraction form
   9,436.56/13,022.70 = 5,187.60/x
3. Step 3: Cross multiply
   9,436.56x = 13,022.70 × 5,187.60
4. Step 4: Simplify right side
   9,436.56x = 67,556,558.52
5. Step 5: Solve for x
   x = 67,556,558.52/9,436.56
6. Step 6: Final answer
   x = 7,159.02