Finding the Fourth Proportional to 9,858.19, 13,604.60 and 5,608.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,858.19 : 13,604.60 = 5,608.47 : x
2. Step 2: Convert to fraction form
   9,858.19/13,604.60 = 5,608.47/x
3. Step 3: Cross multiply
   9,858.19x = 13,604.60 × 5,608.47
4. Step 4: Simplify right side
   9,858.19x = 76,300,990.96
5. Step 5: Solve for x
   x = 76,300,990.96/9,858.19
6. Step 6: Final answer
   x = 7,739.86