Finding the Fourth Proportional to 9,893.98, 13,653.72 and 5,356.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,893.98 : 13,653.72 = 5,356.71 : x
2. Step 2: Convert to fraction form
   9,893.98/13,653.72 = 5,356.71/x
3. Step 3: Cross multiply
   9,893.98x = 13,653.72 × 5,356.71
4. Step 4: Simplify right side
   9,893.98x = 73,138,991.68
5. Step 5: Solve for x
   x = 73,138,991.68/9,893.98
6. Step 6: Final answer
   x = 7,392.27