Finding the Fourth Proportional to 13,839.13, 19,096.06 and 7,870.13

Step by Step Solution

1. Step 1: Write the proportion equation
   13,839.13 : 19,096.06 = 7,870.13 : x
2. Step 2: Convert to fraction form
   13,839.13/19,096.06 = 7,870.13/x
3. Step 3: Cross multiply
   13,839.13x = 19,096.06 × 7,870.13
4. Step 4: Simplify right side
   13,839.13x = 150,288,474.69
5. Step 5: Solve for x
   x = 150,288,474.69/13,839.13
6. Step 6: Final answer
   x = 10,859.68