Finding the Fourth Proportional to 9,981.24, 13,759.79 and 7,853.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.24 : 13,759.79 = 7,853.10 : x
2. Step 2: Convert to fraction form
   9,981.24/13,759.79 = 7,853.10/x
3. Step 3: Cross multiply
   9,981.24x = 13,759.79 × 7,853.10
4. Step 4: Simplify right side
   9,981.24x = 108,056,938.05
5. Step 5: Solve for x
   x = 108,056,938.05/9,981.24
6. Step 6: Final answer
   x = 10,826.01