Finding the Fourth Proportional to 11,670.76, 16,086.18 and 7,938.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,670.76 : 16,086.18 = 7,938.28 : x
2. Step 2: Convert to fraction form
   11,670.76/16,086.18 = 7,938.28/x
3. Step 3: Cross multiply
   11,670.76x = 16,086.18 × 7,938.28
4. Step 4: Simplify right side
   11,670.76x = 127,696,600.97
5. Step 5: Solve for x
   x = 127,696,600.97/11,670.76
6. Step 6: Final answer
   x = 10,941.58