Finding the Fourth Proportional to 9,801.12, 13,540.74 and 9,727.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,801.12 : 13,540.74 = 9,727.32 : x
2. Step 2: Convert to fraction form
   9,801.12/13,540.74 = 9,727.32/x
3. Step 3: Cross multiply
   9,801.12x = 13,540.74 × 9,727.32
4. Step 4: Simplify right side
   9,801.12x = 131,715,111.02
5. Step 5: Solve for x
   x = 131,715,111.02/9,801.12
6. Step 6: Final answer
   x = 13,438.78