Finding the Fourth Proportional to 9,857.34, 13,603.41 and 5,607.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,857.34 : 13,603.41 = 5,607.90 : x
2. Step 2: Convert to fraction form
   9,857.34/13,603.41 = 5,607.90/x
3. Step 3: Cross multiply
   9,857.34x = 13,603.41 × 5,607.90
4. Step 4: Simplify right side
   9,857.34x = 76,286,562.94
5. Step 5: Solve for x
   x = 76,286,562.94/9,857.34
6. Step 6: Final answer
   x = 7,739.06