Finding the Fourth Proportional to 10,100.98, 15,119.15 and 5,409.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,100.98 : 15,119.15 = 5,409.30 : x
2. Step 2: Convert to fraction form
   10,100.98/15,119.15 = 5,409.30/x
3. Step 3: Cross multiply
   10,100.98x = 15,119.15 × 5,409.30
4. Step 4: Simplify right side
   10,100.98x = 81,784,018.10
5. Step 5: Solve for x
   x = 81,784,018.10/10,100.98
6. Step 6: Final answer
   x = 8,096.64