Finding the Fourth Proportional to 9,945.54, 14,826.83 and 9,478.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,945.54 : 14,826.83 = 9,478.98 : x
2. Step 2: Convert to fraction form
   9,945.54/14,826.83 = 9,478.98/x
3. Step 3: Cross multiply
   9,945.54x = 14,826.83 × 9,478.98
4. Step 4: Simplify right side
   9,945.54x = 140,543,177.64
5. Step 5: Solve for x
   x = 140,543,177.64/9,945.54
6. Step 6: Final answer
   x = 14,131.28