Finding the Fourth Proportional to 9,804.96, 13,530.78 and 5,613.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,804.96 : 13,530.78 = 5,613.21 : x
2. Step 2: Convert to fraction form
   9,804.96/13,530.78 = 5,613.21/x
3. Step 3: Cross multiply
   9,804.96x = 13,530.78 × 5,613.21
4. Step 4: Simplify right side
   9,804.96x = 75,951,109.60
5. Step 5: Solve for x
   x = 75,951,109.60/9,804.96
6. Step 6: Final answer
   x = 7,746.19