Finding the Fourth Proportional to 9,561.42, 13,198.32 and 5,583.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,561.42 : 13,198.32 = 5,583.78 : x
2. Step 2: Convert to fraction form
   9,561.42/13,198.32 = 5,583.78/x
3. Step 3: Cross multiply
   9,561.42x = 13,198.32 × 5,583.78
4. Step 4: Simplify right side
   9,561.42x = 73,696,515.25
5. Step 5: Solve for x
   x = 73,696,515.25/9,561.42
6. Step 6: Final answer
   x = 7,707.70