Finding the Fourth Proportional to 10,828.45, 14,956.59 and 7,839.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,828.45 : 14,956.59 = 7,839.55 : x
2. Step 2: Convert to fraction form
   10,828.45/14,956.59 = 7,839.55/x
3. Step 3: Cross multiply
   10,828.45x = 14,956.59 × 7,839.55
4. Step 4: Simplify right side
   10,828.45x = 117,252,935.13
5. Step 5: Solve for x
   x = 117,252,935.13/10,828.45
6. Step 6: Final answer
   x = 10,828.23