Finding the Fourth Proportional to 10,719.76, 16,085.98 and 5,178.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,719.76 : 16,085.98 = 5,178.82 : x
2. Step 2: Convert to fraction form
   10,719.76/16,085.98 = 5,178.82/x
3. Step 3: Cross multiply
   10,719.76x = 16,085.98 × 5,178.82
4. Step 4: Simplify right side
   10,719.76x = 83,306,394.94
5. Step 5: Solve for x
   x = 83,306,394.94/10,719.76
6. Step 6: Final answer
   x = 7,771.29