Finding the Fourth Proportional to 10,900.92, 15,043.56 and 7,719.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,900.92 : 15,043.56 = 7,719.86 : x
2. Step 2: Convert to fraction form
   10,900.92/15,043.56 = 7,719.86/x
3. Step 3: Cross multiply
   10,900.92x = 15,043.56 × 7,719.86
4. Step 4: Simplify right side
   10,900.92x = 116,134,177.10
5. Step 5: Solve for x
   x = 116,134,177.10/10,900.92
6. Step 6: Final answer
   x = 10,653.61