Finding the Fourth Proportional to 9,803.12, 13,543.50 and 9,729.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,803.12 : 13,543.50 = 9,729.32 : x
2. Step 2: Convert to fraction form
   9,803.12/13,543.50 = 9,729.32/x
3. Step 3: Cross multiply
   9,803.12x = 13,543.50 × 9,729.32
4. Step 4: Simplify right side
   9,803.12x = 131,769,045.42
5. Step 5: Solve for x
   x = 131,769,045.42/9,803.12
6. Step 6: Final answer
   x = 13,441.54