Finding the Fourth Proportional to 13,191.45, 19,800.82 and 8,839.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,191.45 : 19,800.82 = 8,839.32 : x
2. Step 2: Convert to fraction form
   13,191.45/19,800.82 = 8,839.32/x
3. Step 3: Cross multiply
   13,191.45x = 19,800.82 × 8,839.32
4. Step 4: Simplify right side
   13,191.45x = 175,025,740.05
5. Step 5: Solve for x
   x = 175,025,740.05/13,191.45
6. Step 6: Final answer
   x = 13,268.12