Finding the Fourth Proportional to 9,613.89, 13,268.71 and 5,581.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,613.89 : 13,268.71 = 5,581.10 : x
2. Step 2: Convert to fraction form
   9,613.89/13,268.71 = 5,581.10/x
3. Step 3: Cross multiply
   9,613.89x = 13,268.71 × 5,581.10
4. Step 4: Simplify right side
   9,613.89x = 74,054,037.53
5. Step 5: Solve for x
   x = 74,054,037.53/9,613.89
6. Step 6: Final answer
   x = 7,702.82