Finding the Fourth Proportional to 9,841.74, 13,581.50 and 5,365.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,841.74 : 13,581.50 = 5,365.40 : x
2. Step 2: Convert to fraction form
   9,841.74/13,581.50 = 5,365.40/x
3. Step 3: Cross multiply
   9,841.74x = 13,581.50 × 5,365.40
4. Step 4: Simplify right side
   9,841.74x = 72,870,085.37
5. Step 5: Solve for x
   x = 72,870,085.37/9,841.74
6. Step 6: Final answer
   x = 7,404.19