Finding the Fourth Proportional to 13,196.89, 19,791.69 and 5,299.39

Step by Step Solution

1. Step 1: Write the proportion equation
   13,196.89 : 19,791.69 = 5,299.39 : x
2. Step 2: Convert to fraction form
   13,196.89/19,791.69 = 5,299.39/x
3. Step 3: Cross multiply
   13,196.89x = 19,791.69 × 5,299.39
4. Step 4: Simplify right side
   13,196.89x = 104,883,884.07
5. Step 5: Solve for x
   x = 104,883,884.07/13,196.89
6. Step 6: Final answer
   x = 7,947.62