Finding the Fourth Proportional to 9,956.48, 13,745.61 and 6,603.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,956.48 : 13,745.61 = 6,603.89 : x
2. Step 2: Convert to fraction form
   9,956.48/13,745.61 = 6,603.89/x
3. Step 3: Cross multiply
   9,956.48x = 13,745.61 × 6,603.89
4. Step 4: Simplify right side
   9,956.48x = 90,774,427.69
5. Step 5: Solve for x
   x = 90,774,427.69/9,956.48
6. Step 6: Final answer
   x = 9,117.13