Finding the Fourth Proportional to 9,945.75, 14,928.43 and 7,305.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.75 : 14,928.43 = 7,305.85 : x
2. Step 2: Convert to fraction form
   9,945.75/14,928.43 = 7,305.85/x
3. Step 3: Cross multiply
   9,945.75x = 14,928.43 × 7,305.85
4. Step 4: Simplify right side
   9,945.75x = 109,064,779.89
5. Step 5: Solve for x
   x = 109,064,779.89/9,945.75
6. Step 6: Final answer
   x = 10,965.97