Finding the Fourth Proportional to 9,781.30, 13,732.70 and 9,781.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,781.30 : 13,732.70 = 9,781.30 : x
2. Step 2: Convert to fraction form
   9,781.30/13,732.70 = 9,781.30/x
3. Step 3: Cross multiply
   9,781.30x = 13,732.70 × 9,781.30
4. Step 4: Simplify right side
   9,781.30x = 134,323,658.51
5. Step 5: Solve for x
   x = 134,323,658.51/9,781.30
6. Step 6: Final answer
   x = 13,732.70