Finding the Fourth Proportional to 9,613.84, 13,264.80 and 5,422.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,613.84 : 13,264.80 = 5,422.09 : x
2. Step 2: Convert to fraction form
   9,613.84/13,264.80 = 5,422.09/x
3. Step 3: Cross multiply
   9,613.84x = 13,264.80 × 5,422.09
4. Step 4: Simplify right side
   9,613.84x = 71,922,939.43
5. Step 5: Solve for x
   x = 71,922,939.43/9,613.84
6. Step 6: Final answer
   x = 7,481.19