Finding the Fourth Proportional to 10,719.89, 16,085.32 and 5,103.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,719.89 : 16,085.32 = 5,103.91 : x
2. Step 2: Convert to fraction form
   10,719.89/16,085.32 = 5,103.91/x
3. Step 3: Cross multiply
   10,719.89x = 16,085.32 × 5,103.91
4. Step 4: Simplify right side
   10,719.89x = 82,098,032.95
5. Step 5: Solve for x
   x = 82,098,032.95/10,719.89
6. Step 6: Final answer
   x = 7,658.48