Finding the Fourth Proportional to 11,172.84, 16,761.96 and 7,892.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,172.84 : 16,761.96 = 7,892.28 : x
2. Step 2: Convert to fraction form
   11,172.84/16,761.96 = 7,892.28/x
3. Step 3: Cross multiply
   11,172.84x = 16,761.96 × 7,892.28
4. Step 4: Simplify right side
   11,172.84x = 132,290,081.67
5. Step 5: Solve for x
   x = 132,290,081.67/11,172.84
6. Step 6: Final answer
   x = 11,840.33