Finding the Fourth Proportional to 11,892.47, 17,839.29 and 9,808.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,892.47 : 17,839.29 = 9,808.61 : x
2. Step 2: Convert to fraction form
   11,892.47/17,839.29 = 9,808.61/x
3. Step 3: Cross multiply
   11,892.47x = 17,839.29 × 9,808.61
4. Step 4: Simplify right side
   11,892.47x = 174,978,631.05
5. Step 5: Solve for x
   x = 174,978,631.05/11,892.47
6. Step 6: Final answer
   x = 14,713.40