Finding the Fourth Proportional to 9,857.90, 13,603.73 and 5,608.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,857.90 : 13,603.73 = 5,608.87 : x
2. Step 2: Convert to fraction form
   9,857.90/13,603.73 = 5,608.87/x
3. Step 3: Cross multiply
   9,857.90x = 13,603.73 × 5,608.87
4. Step 4: Simplify right side
   9,857.90x = 76,301,599.10
5. Step 5: Solve for x
   x = 76,301,599.10/9,857.90
6. Step 6: Final answer
   x = 7,740.15