Finding the Fourth Proportional to 9,436.82, 13,019.48 and 5,661.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.82 : 13,019.48 = 5,661.20 : x
2. Step 2: Convert to fraction form
   9,436.82/13,019.48 = 5,661.20/x
3. Step 3: Cross multiply
   9,436.82x = 13,019.48 × 5,661.20
4. Step 4: Simplify right side
   9,436.82x = 73,705,880.18
5. Step 5: Solve for x
   x = 73,705,880.18/9,436.82
6. Step 6: Final answer
   x = 7,810.46